Forced Induction Compression Ratios

Spooler · 01-09-2020, 06:56 PM

Looks like Adam LZ has already lost his head gaskets. Not sure about it but it sure does look like it.

DaveZ03 · 01-10-2020, 07:18 AM

Given what the motor is pushing out HP wise, I believe you are right. It seems like he and his folks are playing catch up a little with this platform. I mean he clearly has connections/money to dump into it, but why not take a more measured approach and "measure twice and cut once"?

Elmo370z · 01-10-2020, 07:41 AM

Quote:

Originally Posted by DaveZ03

Given what the motor is pushing out HP wise, I believe you are right. It seems like he and his folks are playing catch up a little with this platform. I mean he clearly has connections/money to dump into it, but why not take a more measured approach and "measure twice and cut once"?

HE is a clout chaser. Plus sure his builders want to do their own thing and not listen to anyone

sirnixalot · 01-10-2020, 08:08 AM

Quote:

Originally Posted by Spooler

I have read the same. Most I read about were pushing water. Only one way to do that and that is if the sleeve machine work was not done properly. I would suspect headgasket issues from a sleeve dropping. I am still researching this. Just any old machine shop won't do. Darton East had major issues years ago from what I was reading. The machine shop must have a 3 or 4 axis CNC and the tolerances are a thousandth to 1/2 a thousandth. It has to be perfect.

Mazworx maybe?

Hotrodz · 01-10-2020, 08:45 AM

Quote:

Originally Posted by Irishrogue

For what it's worth, I went with 9:1 compression on my rebuild and did 685hp 615 tq on 91 octane at 20 lbs of boost. I don't have the low end problem spooler was talking about, I think that's mostly credit to Seb's tuning abilities with the throttle response. From what Seb explained to me the main limiting factor to running higher boost is the intake manifold.

The manifold becomes a problem on low compression high boost builds. Once you go above 24 psi the manifold becomes a factor as well.

Spooler · 01-10-2020, 08:45 AM

Quote:

Originally Posted by Elmo370z

HE is a clout chaser. Plus sure his builders want to do their own thing and not listen to anyone

That sounds familiar. LOL

01-09-2020, 06:56 PM	#31 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,504 Drives: 2013 Nismo 370z Rep Power: 2684391	Looks like Adam LZ has already lost his head gaskets. Not sure about it but it sure does look like it. Martijn_b likes this.

01-10-2020, 07:18 AM	#32 (permalink)
DaveZ03 Base Member Join Date: Feb 2019 Location: Kentucky Posts: 194 Drives: '11 FairladyZ Rep Power: 48203	Given what the motor is pushing out HP wise, I believe you are right. It seems like he and his folks are playing catch up a little with this platform. I mean he clearly has connections/money to dump into it, but why not take a more measured approach and "measure twice and cut once"? Spooler and Martijn_b like this.

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