TB removal and then some!!!
 

Hey Tom,
What was the condition of the inside of your coolant crossover pipe? Mine was rusted inside. My friend in Japan had coolant squirting out from pin holes due to rust.


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Re: TB removal and then some!!!
 

Craig, the pipe is absolutely fine on the inside...just that one area that I repaired....but now you have me thinking about this...I will tape off the ends and fill with water and see what happens...:):)

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Re: TB removal and then some!!!
 

Craig....just some minor surface rust...should have checked better before I painted....lol....will get some sandpaper and tape around the head of a long screwdriver and sand the inside of the pioe....just to be sure....:):)Attachment 15171Attachment 15172

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TB removal and then some!!!
 

Tom, That is good news. I think you will be okay and mine was just sitting too long and maybe too much water (distilled) with 50/50 mix. His was spitting out the pin holes only when pressurized. Luckily I had an extra crossover pipe to send him at the time. I am going stainless from Phil. When I move back this will be my last before retiring so no more sitting Z and then some......


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Re: TB removal and then some!!!
 

Yours is beautiful compared to mine a few years ago.

Attachment 15173Attachment 1


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Re: TB removal and then some!!!
 

Good choice on the stainless....Phil does great work....glad to hear retirement is getting closer for you....will be 5 years in June for me....and that has gone by really quick.....:):):thumbsup:


Wow....yours is really destroyed...glad you are replacing.....:):)

Re: TB removal and then some!!!
 

Yes Sir! I am 3-5 years away from retirement. Yep, I already replaced the one shown.


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Re: TB removal and then some!!!
 

:thumbsup::thumbsup::thumbsup::)

Re: TB removal and then some!!!
 

Someone just mentioned to me that the JB Weld will eventually break off from the repair area in the future and cause problems.....as you can see...the area circled is the repair area I sanded down after taking this pic....I can drill it out and round off that area...and just leave it opened without the JB Weld.....as it will be covered by the hose down to the straight line shown...as we all know....which won't be leaking when attached...
Any thoughts on using the JB in the cooling system???
Attachment 15176

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Re: TB removal and then some!!!
 

Should be no problem if it's on the outside.

Re: TB removal and then some!!!
 

It may be a problem as it is on the outside and the inside so the JB Weld would be exposed constantly to the coolant....I do have a spare coolant pipe which is in very good condition...so looks like....that is the way to go....

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Re: TB removal and then some!!!
 

So the learning experience continues.....here is a pic with the JB removed from a few minutes ago....I was under the impression that when cured....it would hard as a rock...I was wrong.. just used a simple pick and it is now removed....this is the hole....in
Pic #1....
This is the spare in Pic #2.... that I just cleaned up again and it is the exact location as the pipe with the hole in it....I know....I know...use the spare....but how else do you learn without trying....I'm still determined to get the original in working order...but will end up using the spare....[emoji16][emoji16]Attachment 15187Attachment 15188

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Re: TB removal and then some!!!
 

Spare coolant pipe prepped.... painted....and ready for service...
Attachment 15198

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Re: TB removal and then some!!!
 

Its been a fun few days recently.... had trouble getting the last piston in one of the calipers lastnight...and destroyed a spreader tool in the process....more later on that...
Today I intended to remove the AC evaporator...with the intention to replace if necessary....but I lucked out when I removed the blower fan and could see inside...no major dirt or obstructions to be seen....the camera got a few great views...I just might run a sweeper in there lightly against the fins to remove any real fine particles....this was major to say the least....a big time saver with another ongoing project....
Just need to get some replacement hoses from the heater core....tank etc...while it is apart....today definitely made up for lastnight... plus calipers are resprayed and finished....:):)
Pic #1...tank removed....like everywhere else on the car....a good cleaning is necessary....
Pic #2...glad I checked the evaporator without removing the brace first...lol....that would have been totally unnecessary...
Pic #3...first peak at the evaporator.. was I pleasantly surprised....
Pic #4...put the camera further inside and have a great pic of the evaporator....no major dirt or obstructions....:):)
Pic #5...and surprise....fan is really clean....no major dirt or any debris... but still will be completely cleaned...
Pic #6...part of the frame on the RS...needs and will be repainted.... looks like some type of leak was present at one time or another....Attachment 15201Attachment 15202Attachment 15203Attachment 15204Attachment 15205Attachment 15206

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Re: TB removal and then some!!!
 

Front brake calipers are rebuilt with new rebuild kit and new pistons... Russell speed bleeders and Hawk brake pads....
had a tough time lastnight as previously mentioned....and broke the piston spreader tool....totally frustrated to say the least...then my wife checks out the last piston today and in a matter of minutes pulls a MacGyver and the final piston is seated... no spreader tool needed....lol
Another item completed....:):)
Pic #1...done....
Pic #2...new kit and new pistons...
Pic #3...did a respray today after last night's episode...
Pic #4...one done...
Pic #5...finally another job completed...glad this one is finished...Attachment 15207Attachment 15208Attachment 15209Attachment 15210Attachment 15211

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Re: TB removal and then some!!!
 

Tom you have the right kind of wife! Mine wouldn't have a clue! --Bob

Re: TB removal and then some!!!
 

Thanks Bob.....
I am very fortunate to have her.:)....especially with 2 projects going on.....she just hopes I get them done before we turn 90....lol hopefully by this Summer...they will both be up and running.... she has also helped me on numerous occasions, she really made my day =D> when we got the last piston to seat....:):)

Re: TB removal and then some!!!
 

Finally after a few months of trying to remove the thermostat housing from the hoses....did it occur to me that once the heater core hoses were removed that the entire hose assembly with the thermostat housing still attached...could be completely removed from the engine compartment...and then clamped into the vise for further operation....
Has anyone replaced or have had new hoses made in Pic #1....if so where did you get this done???....thanks for any info....
Pic #1...hose assembly laid out... can't find replacement assembly... anyone have any info????
Pic #2...sometimes you just have to do things the unconventional way...
Pic #3... talk about some corrosion...here...
Pic #4....and here...
Pic #5....and plenty here...Attachment 15215Attachment 15216Attachment 15217Attachment 15218Attachment 15219

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TB removal and then some!!!
 

Wow! And then some for sure!

I do not have any answers for you about the hoses, but Jerry has the new improved connector you should consider.

https://www.jerrysgaskets.com/nipple...urn-90-95-7c4/



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Re: TB removal and then some!!!
 

Thanks Craig....I already have 2 of them in stock....one from Jerry's and another from the parts store...

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TB removal and then some!!!
 

Nice! Spare parts and then some![emoji1303]🤙🏼




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Re: TB removal and then some!!!
 

As you know Craig....there is always "and then some"....[emoji23]

Did a few more items today....
Pic #1...the thermostat housing and attaching parts are now painted and ready for install when the time is right...
Pic #2...although the thermostat and the hose fitting were corroded to an extent.....the inside of the housing was extremely clean with no crud buildup....
Pic #3...Also did a preliminary cleaning in this area...will probably used compressed air and blow out the heater core....hoping not to find any major crud in there....Attachment 15225Attachment 15226Attachment 15227

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Re: TB removal and then some!!!
 

Thanks for doing this Tom. I've followed this thread and now that I need to change my AC compressor, I just checked the beginning so I could get the TB off. I've had my plenum off 4 times, but I'm hoping its easier just to take the TB off and get to the compressor.



The FSM says "remove bolts," but it doesn't say how many. 4 are easy to spot, but I'm glad I read this so I knew to remove 5!


Gary

Re: TB removal and then some!!!
 

Hello Gary....glad that this thread is helping you out.....I know that we all have our way of doing things....and I am not implying that my way is the correct way...but I hate messing with the TB....unless I have to...as when I took it off to clean and reinstall way back when....so rather than take the TB off....I rather undo the plenum and prop it up with a small block of wood in the front and IIRC....that may give you more than enough room to remove and reinstall the AC compressor....remember that my front end has been apart for almost 3 years.....lol..(I just looked at my AC removal posts) and I like removing the plenum...if propping it up doesn't give you enough room.....if you do end up removing the TB and not remove the throttle cable or the TPS etc.......you should be fine with the reinstall and not affect your settings....as you more than likely know... I have my replacement AC compressor which is ready to go....and have a vacuum pump to do a vacuum pull....once I get everything together....and IIRC our system holds 8oz of compressor oil.....I think that I listed that somewhere in the thread....found it...post #446....also I bought from a company that deals directly with Denso....and I called Denso and spoke to the tech rep there... the replacement compressors come from the factory with 4.1oz of oil as mentioned in post #446....so be sure not to over or under fill the system... and depending on the year (as yours is a 90) make sure to use the correct oil for the type freon you have in your system....again...things you already know...good luck and keep us posted on how it works out...as I will be doing the same thing once I get the car back together....lol:):)

Re: TB removal and then some!!!
 

Good thoughts Tom :thumbsup:
It might have been just as easy to pull the plenum, but I did get to the AC compressor by removing the TB.


Now ... my issue is the replacement Denso compresssor has a different electrical connector on it, so I need to swap, but I also need to figure out which terminal should be + and which - :confused: [mine is a '90]



I an running R134a and I'll ensure it's PAG if I need to add any.


Gary

Re: TB removal and then some!!!
 

Some FYI....which already be common knowledge to some...if you need to replace the coolant reservoir hose that attaches to the heater core...I found that the AC Delco hose is reasonable and made in the USA...purchased from Rock Auto....I still need to decide which way I will replace and attach the coolant hoses going back into the thermostat housing from the firewall...maybe using a different configuration....
Also ran compressed air through the heater core and was happy to see a very small amount of coolant go into the container with absolutely no crud or anyother type of obstructions in the core...I will need to get the remaining refrigerant out of the AC Evaporator....that way I can add the proper amount of refrigerant oil to the dryer to give me a total of 8oz of oil after the vacuum pull is completed....:):)Attachment 15306

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Re: TB removal and then some!!!
 

Glad you got it installed Gary....here is the PAG 46 oil I will be using... ended up buying two containers at two different times...lol...now I'll have a backup...."and then some"..lol.....since I'll only have to add 3.9oz once I empty the evaporator for a total of 8oz.....:):)Attachment 15307

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Re: TB removal and then some!!!
 

Had a chance to get the tensioner prepped and painted today....here are the end results with the last pic showing prepped and ready for paint...Attachment 15486Attachment 15487Attachment 15488Attachment 15489

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Re: TB removal and then some!!!
 

The following pics are the inners of the original LT5 tensioner and the the Dayco "replacement" tensioner... which some parts are used in the original...
Pic #1...original parts on the left... replacement parts on the right...
Pic #2...may cleanup the left part and reuse...or use the newer plastic piece on the right...
Pic #3...although these two parts look identical...they have different part #'s and the collar orientation are opposite of each other...
Pic #4...original pulley on the far left...correct Dayco replacement in the middle...and the steel replacement referred to on the right as mentioned in a thread here in the Forum...
Pic #5...new spring on the left... original spring on the right...notice how the original is slightly expanded more than the replacement... I am assuming that this is due to normal wear over the years....I am also assuming that either spring will work just fine....but I will use the new spring....Attachment 15495Attachment 15496Attachment 15498Attachment 15499Attachment 15500

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Re: TB removal and then some!!!
 

Although I have no desire to build another one...this was a learning experience and now know a few more things....ended up doing a resand and repaint...and worth the time...now that it's done....ready for install....whenever that will be..:):)
Attachment 15508Attachment 15509

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Re: TB removal and then some!!!
 

Great job! Highly appreciate that you shared your work!

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Re: TB removal and then some!!!
 

Thanks Matt B......:):)

Re: TB removal and then some!!!
 

Wow it took me two days to read this entire thread. Roadster you have a lot of Patience my friend. Loved all the details and great work. I wished you lived closer to me as I would have lend a hand just to learn what you are going through but I have learned a ton.

The thread title "TB removal and then some" THEN SOME no doubt!!

Thanks again and I cant wait till you get that Black beast out on the road.

Re: TB removal and then some!!!
 

Hello stamingla,....thanks for the compliments.....glad reading the thread has helped you out....a big part of what I've learned comes from being a WAZOO member with all of the great knowledge within the Group....plus members here on the Forum....also reading Marc Haibeck's info on his site.....and reading as much as I can about the LT5...and also trying to figure out some things on my own....I know alot more now than I did when I purchased the 94 back in April 2014.....yes I am a patient kind of person....:)....been known to redo things over and over again....until I'm satisfied with the results....lol but then that is me....lol.....can't wait to get the Z back on the road myself.... as its been 3 years this June....and with the 74 now home....having 2 projects to complete and being retired doesn't help much....lol...lol
btw....if you want to check out another thread I did on front fender well cover restoration...then click on the link for that info....yes we live on opposite sides of the State....too bad we are not closer as you mentioned....:):)
https://www.zr1.net/forum/showthread.php?t=27471

Re: TB removal and then some!!!
 

I will definently read that post. Will you be at Carlisle in a few months?

Re: TB removal and then some!!!
 

Thanks....I intend to be....did some work on the Z today....but still more to do...[emoji16][emoji16]

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Re: TB removal and then some!!!
 

Got back to work on the Z today... primarily cleaning on the RF suspension...as mentioned many times before....the amount of grease and grime accumulated over the years is something...but cleans up relatively easy...although time consuming getting into every nook and cranny is worth it in the end...
Also checking out the control arm bushings...there are some cracks in the uppers...they still should last for many years with the amount of planned miles for future years... plus don't know if I want to dig further into the suspension at this time...although this would be the perfect time to do it....[emoji848][emoji848]
Pic #1...primarily cleaning...still more to do...
Pic #2...amount of grease allover the lower ball joint....
Pic #3...that brace by the lower control arm was all covered with grease...notice the 2 spots of grease there compared to the cleaned part of the brace...nice to be clean...
Pic #4...this is time consuming when in the garage....as you can't use a power washer to get done quicker...so you do what you can do...
Pic #5...upper front control arm bushing...although cracks...should still last for a while...
Pic #6...upper rear control arm bushings...cracks....but I have seen worse...still would be the right time to do the job...but do I want to get in that deep....[emoji848][emoji848]Attachment 15595Attachment 15596Attachment 15597Attachment 15598Attachment 15599Attachment 15600

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Re: TB removal and then some!!!
 

Don't know if anyone is interested....but C&S Corvette just updated their web site about a hour ago with the SuperPro bushing kit back in stock.... I decided to go for it and just made the purchase....looks like the Z will take just a little bit longer to get back together....but should be worth it for sure.... :)
https://www.corvettepartscenter.com/...on-bushing-kit

Re: TB removal and then some!!!
 

Tom,

When I redid my front suspension, lower control arm bushing replacement was easy. Upper, not so easy. At the time, corvette control offered re-bushed uppers and that is what I used.
When I searched today, couldn?t find the same at corvette central but corvette mods website turned up below. Doesn?t say left or right or both. Might want to give them a call.
https://www.corvettemods.com/C4-Corv...hoC6osQAvD_BwE

Re: TB removal and then some!!!
 

Hello Yun, thanks for the suggestion ....I have been reading up alot on the control arm builds and see that the uppers can be problematic...and there is info over on CF from members there who have listed ways to get the job done...hopefully that will also work out for me....
As far as Corvette Mods go....I stay away from them....based on multiple members in my FB Corvette Groups....99% have had bad experiences with them and won't use them again...
I keep getting deeper into the 94... someday I'll get it back together...
Hope everything is well on your end...and that your 94 is running good....[emoji16][emoji16]

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