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My TPI Breathe Build

Old 02-12-2019, 12:28 PM
  #51  
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Re: My TPI Breathe Build

The egr side should be removable. You can measure the port opening too and compare to the 1204 specs.
1204 1.99 in. x 1.23 in
Even if the plate isn’t removable from the 1204 tin snips or drill a hole in the passengers side.
or ask what this guy ended up using.
https://www.thirdgen.org/forums/tpi/...-manifold.html

Last edited by Tuned Performance; 02-12-2019 at 05:20 PM.
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Old 02-12-2019, 12:45 PM
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Re: My TPI Breathe Build

Hey Vinny, have you looked into this?
I've never used them but read a lot from guys that have....

https://www.extrudehoneafm.com/
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Old 02-12-2019, 03:31 PM
  #53  
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Re: My TPI Breathe Build

Vinny also keep in mind, biggest isn't always better and knowing where to remove material and where not to are the key to a "good" port job porters will try here and there and measure the results on a flow bench. Dont get me wrong I'm not bashing, as so far what I see will make improvement for you. even A/market manufacturers get it wrong Edelbrock for one the 3860 is a good high flow base then they make the 3817 - Vortec TPI base and it flows about what the stock GM base does you would think a company that makes "performance" parts would do R&D before selling them. - keep going
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Old 02-12-2019, 04:25 PM
  #54  
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Re: My TPI Breathe Build

Originally Posted by Tootie Pang View Post
If you are going to do a custom tune then I would say go ahead and play with the injectors, if not, I would recommend just putting it all together and not changing too many things at once...
That was our saying when I raced go-karts...only one change at a time. I was only wanting to change because I am going to be pulling them out anyway, I really don't want to mess with a tune if I don't need one. I know you went through quite a few before getting it right. I will check my budget and see if the new Delphi's are in there. I must have one of the few great working Multec sets but you know how it goes, right after I put them back in...they crap the pot!
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Old 02-12-2019, 04:32 PM
  #55  
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Re: My TPI Breathe Build

Originally Posted by BizJetTech View Post
Hey Vinny, have you looked into this?
I've never used them but read a lot from guys that have....

https://www.extrudehoneafm.com/
I do know of them and checked out their site but that was about it. I posted a pic in one of my previous post up above of a before and after that I got from their site. I might reach out to them just to get some info on cost and such. It looks like a pretty cool process they do.
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Old 02-12-2019, 07:28 PM
  #56  
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Re: My TPI Breathe Build

Originally Posted by zman1969 View Post
Vinny also keep in mind, biggest isn't always better and knowing where to remove material and where not to are the key to a "good" port job porters will try here and there and measure the results on a flow bench. Dont get me wrong I'm not bashing, as so far what I see will make improvement for you. even A/market manufacturers get it wrong Edelbrock for one the 3860 is a good high flow base then they make the 3817 - Vortec TPI base and it flows about what the stock GM base does you would think a company that makes "performance" parts would do R&D before selling them. - keep going
You would think they would, especially a performance parts co. Thanks for the words of advice Zman. It sounds like you have a clue. I have been trying to figure a DIY flow tester. I don't have access to the real thing.
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Old 02-12-2019, 07:32 PM
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Re: My TPI Breathe Build

Originally Posted by vinny R View Post
I do know of them and checked out their site but that was about it. I posted a pic in one of my previous post up above of a before and after that I got from their site. I might reach out to them just to get some info on cost and such. It looks like a pretty cool process they do.
If you do speak with them, let us know the cost, I've been curious about that, thanks
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Old 02-13-2019, 08:25 AM
  #58  
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Re: My TPI Breathe Build

I was at HF yesterday and standing in the checkout line I found a digital inner and outer micrometer. Yes I know it it a Pittsburgh product but for what I am doing it will be just fine. I would not want to trust it on a crank journal but it sure works sooo much better than the tape measure I have been using. It was a whopping $10 I am trying to maintain some consistency on the port openings and this $10 well spent mic will do just the trick. All the openings are within .01 of each other. I guess the tape measure worked o.k.



Here is the new opening size.


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Old 02-13-2019, 08:39 AM
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Re: My TPI Breathe Build

Just for the record....that is a digital caliper
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Old 02-17-2019, 09:07 AM
  #60  
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Re: My TPI Breathe Build

Originally Posted by BizJetTech View Post
Just for the record....that is a digital caliper
Thanks for the education Biz...I feel like an idiot...it is printed right on the tool!.

Does any of you guys following this know the port opening dimension is on my 081 heads? I am looking for a measurement like 1.125" x 1,80".Maybe one of you have a set of heads laying around and can give me a number>
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Old 02-17-2019, 02:15 PM
  #61  
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Re: My TPI Breathe Build

Originally Posted by Tuned Performance View Post
The egr side should be removable. You can measure the port opening too and compare to the 1204 specs.
1204 1.99 in. x 1.23 in
Even if the plate isnít removable from the 1204 tin snips or drill a hole in the passengers side.
or ask what this guy ended up using.
https://www.thirdgen.org/forums/tpi/...-manifold.html
FWIW, the 1204 is what I used; I simply drilled out the spot weld and the plates fell off.
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