Porting intakes: Stage I interest?

[LGAFF]

I have done 5 intakes now, I currently am doing them on an exchange basis for $700.00. The $700 is for full intake porting to 36MM. I know that porting is not cheap, and I was wondering if anyone would be interested in a stage I package for $500.00. This would focus on the primary runners only and I would open them to approx 35MM, eliminating the primary injector boss, etc. and opening the IH were it meets the head to match Jerry's gasket. The plenum would be opened on the primary runners as well.

Let me know your thoughts.

[billybaloneey]

Please post several pictures of your work.

[LGAFF]

Here are some pics: Most of the IL guys have seen it in person.

http://www.zr1netregistry.com/forum/showthread.php?t=8742


See post 24

http://www.zr1netregistry.com/forum/showthread.php?t=9203&page=3

[Aurora40]

My two cents, but I suspect if someone was going to go through the hassle of removing their plenum and injector housings, packing them up, and shipping them out, then $200 worth of porting saved wouldn't be worth it.

[Paul Workman]

I have done 5 intakes now...

You must be a glutton for punishment, my good friend.;) I guess I missed or didn't see the fun of aluminum splinters that got down in my gloves...and SOCKS! But, if ya wanna have some fun, try porting some heads. (I've 'bout worn out a snap gauge, and that ain't easy!)

How-some-ever, I think Aurora40 has a point. But, then again... Haveta try it and see. Some dyno #'s might shed some light on the unknown; just what would the performance curves look like? But, if the idea doesn't sell, you can move onto "phase-II" pretty easy.

What "stage" wouldja call this? (That's 37mm gauge in that thar head.)

http://i185.photobucket.com/albums/x220/6PPC_bucket/tech%20files/Headporting002Large.jpg

P.

[jonszr1]

have you considered doing a porting setup thats like the one rick hipsher did . where the divider in the plenum is taken out and then blended into seperate ports in the injector housings. if so what would that cost be .?

[Locobob]

My two cents, but I suspect if someone was going to go through the hassle of removing their plenum and injector housings, packing them up, and shipping them out, then $200 worth of porting saved wouldn't be worth it.

:iamwithst Can't really see the logic in this either. Someone willing to accept a incomplete job just to save a few bucks probably shouldn't own a ZR-1. Personally I'd have a hard time doing a partial job for someone, just knowing that I didn't give it my all would really bug me.

[-=Jeff=-]

I have done 5 intakes now, I currently am doing them on an exchange basis for $700.00. The $700 is for full intake porting to 36MM. I know that porting is not cheap, and I was wondering if anyone would be interested in a stage I package for $500.00. This would focus on the primary runners only and I would open them to approx 35MM, eliminating the primary injector boss, etc. and opening the IH were it meets the head to match Jerry's gasket. The plenum would be opened on the primary runners as well.

Let me know your thoughts.

How about a winter special for the 36mm for $500 :sign10:

[LGAFF]

:iamwithst Can't really see the logic in this either. Someone willing to accept a incomplete job just to save a few bucks probably shouldn't own a ZR-1. Personally I'd have a hard time doing a partial job for someone, just knowing that I didn't give it my all would really bug me.


The largest restriction is the primary runner, as you know the ports into the heads can be as small as 31mm. The primary is also blocked by a fairly large injector boss. The secondary runner opens up at 36mm at the head.

Testing would probably be prudent to check the result vs stock and vs a 35-36mm ported plenum.

[Locobob]

The largest restriction is the primary runner, as you know the ports into the heads can be as small as 31mm. The primary is also blocked by a fairly large injector boss. The secondary runner opens up at 36mm at the head.

Testing would probably be prudent to check the result vs stock and vs a 35-36mm ported plenum.

I see what you are saying and I'd agree that you'd get very substancial gains from just hitting the big problem areas, probably within 80-90% of a full port job. Just seems wrong to me to not go for 100% after going through all the trouble and expense of disassemby/ reassembly/shipping/new gaskets/etc. :dontknow:

[LGAFF]

In order to save some time, I am going to do this on my 90, will do 36MM ports on the 2ndry and primary will be 35mm moving down to 33-34. Lets see what happens.

[-=Jeff=-]

Wanna do mine for me too?

[LGAFF]

On yours we should just take out the Injector bosses, they are 94+ right?

[-=Jeff=-]

On yours we should just take out the Injector bosses, they are 94+ right?

No I would have the 90 IH and plenum done

[Sgreg]

I have done 5 intakes now, I currently am doing them on an exchange basis for $700.00. The $700 is for full intake porting to 36MM. I know that porting is not cheap, and I was wondering if anyone would be interested in a stage I package for $500.00. This would focus on the primary runners only and I would open them to approx 35MM, eliminating the primary injector boss, etc. and opening the IH were it meets the head to match Jerry's gasket. The plenum would be opened on the primary runners as well.

Let me know your thoughts.

Lee, don't want to hijack here but I wish someone would do a more affordable Stage One Cam grind for 350 motors. Cam grinds are typically $1500-1600 plus a set of core cams. I know R&D is expensive but it is a shame after full porting not to do cams but that is a bunch on top of porting costs. For those of us who have the porting or will have, does anyone have any thoughts to pursue less expensive cam grinding for stock cube motors ?? This is the final step without going to a big cube LT-5. Should be some demand for it in our group. :cheers:

[Pete]

Greg,$2k is cheap for 4 cams.
Call SGC or look at Marc's website if you went cams they are an average of $1k+ each cam.

At $2k or $500 each is within the norm even for LSx cams.

I'm all for cheaper/lower cost cams as long as they work, then i could try different sets for more power.
I would need to know they will work,they won't take out lifters/engine then it would be very expensive.


Pete

[Sgreg]

Greg,$2k is cheap for 4 cams.
Call SGC or look at Marc's website if you went cams they are an average of $1k+ each cam.

At $2k or $500 each is within the norm even for LSx cams.

I'm all for cheaper/lower cost cams as long as they work, then i could try different sets for more power.
I would need to know they will work,they won't take out lifters/engine then it would be very expensive.


Pete

Pete, I am certainly aware of the prices being charged and people have a right to charge that; I am just looking for thinking out of the box about how a small quatity order vs one offs might reduce the price a little. If I had all the cam specs at my disposal, I can get four done for $1000 to 1200 with cores. But I don't have the specs. Those that do have spent a bundle of money on R and D and are retiring that cost in every order they take. I can't blame anyone for wanting to get their development money back with a return. I am only suggesting that instead of doing one at a time, there might be a enough interest in doing say a half dozen at a time. Not a big order but not one offs over and over again. I know there are problems with this approach or it would have been done already. Just trying to make this process more cost efficient for more members who may have wanted to do mods like this but gave up because it was just too pricey..