TB coolant crossover,any disadvantages? - Page 2 - ZR-1 Net Registry Forums

Z51JEFF · 03-28-2010

Quote:

Originally Posted by scholtmj

http://zr1specialist.com/HAT%20Web/p...t%20bypass.htm

Is this what you're looking for?

Thats it,I was all set to make one of these but couldnt see any room under the plenum.Now I know it can work Ill go take another look,Thanks for the link.

jonszr1 · 03-28-2010

after i did this mod .i took 2 3 ft sections of hose and ran 1 to the front air dam and the other tothe right side wheel well so that cool air can circulate thru the throttle body, dont really know if it helped ,but figured it couldnt hurt

carter200 · 03-28-2010

Coolest thing you could do for your throttle body is to install one of the Billet trottle body plates

Scrrem · 03-28-2010

Quote:

Originally Posted by carter200

Coolest thing you could do for your throttle body is to install one of the Billet trottle body plates

Yep, I love mine...thanks Carter!!!
Rich

carter200 · 03-28-2010

Rich,
Glad I could help

tomtom72 · 03-30-2010

Quote:

Originally Posted by A26B

Yep! I didn't have the bypass though. The stock hose ruptured, facing towards the plenum (of course) & flooded the valley. Stuck in a gas station, fixed it, starter toast but easily push started (small miracle).

Lesson: don't forget the "little" coolant hoses when you replace the "big" ones.

May I ask what type of hose you guys use as replacement hose for the coolant lines along the plenum? I know I can get 3/16" fuel hose, but I'm not sure that is okay for this situation.

TIA

Tom

Aurora40 · 03-30-2010

You should be able to buy heater hose that is that size. I suspect fuel hose would work too, though?

tomtom72 · 03-30-2010

Thanks Bob

.....sometimes it's the simple things that escape my eye!

bobbyhi · 03-30-2010

I used fuel hose on mine................

Z51JEFF · 04-10-2010

Got the job done,what a pain in the a$$.Despite the fact that this pipe was supposed to go in with out removing the plenum,that wasnt the case.There was no way in hell this was going in without at least raising the front of the plenum.Then I had to take my tube bender and change the pipe quite a bit on the driver side.Once I got the plenum up I could see oil residue everywhere so I went ahead and removed the plenum to clean everything up.While I had everything apart I found the secondary solenoid wasnt holding vacuum.In the past the pump would evacuate the system and cycle one second every 7 seconds then it got down to about 4 seconds.Replaced the solenoid no it holds vacuum for maybe 30 seconds or longer.The cars got a stumble if you stab the pedal off idle.Found a vacuum leak at the PCV fittings so Im working on that now.I ran a preformed hose off of the TB nipple to give it a finished look.[IMG]

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03-28-2010	#12
jonszr1 Join Date: Sep 2006 Location: lone pine and mammoth lakes Posts: 1,407	Re: TB coolant crossover,any disadvantages? after i did this mod .i took 2 3 ft sections of hose and ran 1 to the front air dam and the other tothe right side wheel well so that cool air can circulate thru the throttle body, dont really know if it helped ,but figured it couldnt hurt

03-28-2010	#13
carter200 Join Date: Jun 2004 Location: Texas Posts: 2,431	Re: TB coolant crossover,any disadvantages? Coolest thing you could do for your throttle body is to install one of the Billet trottle body plates __________________ 95 ZR-1 BLK/Gry #392 LT5 Reg# 868 RIP ZR1NET Founding Mem #155

03-28-2010	#15
carter200 Join Date: Jun 2004 Location: Texas Posts: 2,431	Re: TB coolant crossover,any disadvantages? Rich, Glad I could help __________________ 95 ZR-1 BLK/Gry #392 LT5 Reg# 868 RIP ZR1NET Founding Mem #155

03-30-2010	#17
Aurora40 Join Date: May 2005 Location: Leesburg, VA Posts: 2,713	Re: TB coolant crossover,any disadvantages? You should be able to buy heater hose that is that size. I suspect fuel hose would work too, though? __________________ Bob Saveland Former owner of #2517 [IMG]http://a.random-image.net/aurora40/vette.jpg[/img]

03-30-2010	#18
tomtom72 Join Date: Dec 2004 Location: Jacksonville, FL USA Posts: 4,645	Re: TB coolant crossover,any disadvantages? Thanks Bob.....sometimes it's the simple things that escape my eye! __________________ 1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member

03-30-2010	#19
bobbyhi Join Date: Jul 2005 Location: Mendota Heights, MN. 55120 Posts: 984	Re: TB coolant crossover,any disadvantages? I used fuel hose on mine................ __________________ Bob Anderson 1990 #2405 White/Gray Haibeck chip,4:09 gears,Power Effects Exhaust,5 spoke chrome,C5 brakes,49th Street rockers,K&N,Hurst,Headers,Upper & lower ported Minnesota State Director Founding Member #19

04-10-2010	#20
Z51JEFF Join Date: Dec 2007 Location: Fremont,Ca Posts: 3,078	Re: TB coolant crossover,any disadvantages? Got the job done,what a pain in the a$$.Despite the fact that this pipe was supposed to go in with out removing the plenum,that wasnt the case.There was no way in hell this was going in without at least raising the front of the plenum.Then I had to take my tube bender and change the pipe quite a bit on the driver side.Once I got the plenum up I could see oil residue everywhere so I went ahead and removed the plenum to clean everything up.While I had everything apart I found the secondary solenoid wasnt holding vacuum.In the past the pump would evacuate the system and cycle one second every 7 seconds then it got down to about 4 seconds.Replaced the solenoid no it holds vacuum for maybe 30 seconds or longer.The cars got a stumble if you stab the pedal off idle.Found a vacuum leak at the PCV fittings so Im working on that now.I ran a preformed hose off of the TB nipple to give it a finished look.[IMG][/IMG][IMG][/IMG]