Forced Induction Compression Ratios

Hotrodz · 01-08-2020, 04:46 PM

The bottom line...it is more about the block itself. I may not be able to take a beating at the 800whp+ regardless on how much the cylinder walls are reinforced.

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Elmo370z · 01-08-2020, 05:21 PM

Quote:

Originally Posted by Hotrodz

The bottom line...it is more about the block itself. I may not be able to take a beating at the 800whp+ regardless on how much the cylinder walls are reinforced.

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I pretty confident a properly sleeved block will be able to handle that abused far better then a closed deck block. Just ask your engine builder.

Hotrodz · 01-08-2020, 05:30 PM

Quote:

Originally Posted by Elmo370z

I pretty confident a properly sleeved block will be able to handle that abused far better then a closed deck block. Just ask your engine builder.

LMAO, I am counting on it! There is a lot of speculation and I am hopeful that better minds will prevail but so far there is little evidence. The one motor that I am familiar with that has sort of held up has constant over heating issues. I am not looking for four digit whp numbers or close to it. 700 to 750 and I am goo to go!

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Spooler · 01-08-2020, 06:00 PM

Quote:

Originally Posted by Hotrodz

LMAO, I am counting on it! There is a lot of speculation and I am hopeful that better minds will prevail but so far there is little evidence. The one motor that I am familiar with that has sort of held up has constant over heating issues. I am not looking for four digit whp numbers or close to it. 700 to 750 and I am goo to go!

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You should be fine. Only way to tell is try it and see. A redo is dang expensive.

Hotrodz · 01-08-2020, 06:11 PM

Quote:

Originally Posted by Spooler

You should be fine. Only way to tell is try it and see. A redo is dang expensive.

I hear ya! Just had to stir the pot a little. You have done your homework and so all you, I and Elmo can do is pay our money and take our chances! I am up for it regardless of outcome!!!

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Spooler · 01-08-2020, 06:22 PM

Quote:

Originally Posted by Hotrodz

I hear ya! Just had to stir the pot a little. You have done your homework and so all you, I and Elmo can do is pay our money and take our chances! I am up for it regardless of outcome!!!

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I hate redo's with a passion. The definition of insanity is doing the same thing over and over again expecting a different result each time.

Gray Goose · 01-09-2020, 07:32 AM

Quote:

Originally Posted by Elmo370z

I pretty confident a properly sleeved block will be able to handle that abused far better then a closed deck block. Just ask your engine builder.

I thought about wet sleeving as well. But I read, in multiple places, that there are temp issues after. I will be driving this on the road as well and do not want temp issues.

Spooler · 01-09-2020, 08:45 AM

Quote:

Originally Posted by Gray Goose

I thought about wet sleeving as well. But I read, in multiple places, that there are temp issues after. I will be driving this on the road as well and do not want temp issues.

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.

Gray Goose · 01-09-2020, 09:38 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.

Right, I haven't read any info saying that using a wet sleeve has worked in any form.

Between the info out there on sleeves and the info out there on current shops closing decks has made me want to go my own route and try something different. I think our ideas on closing these decks will work, but I will just have to prove that after the build. -- Or I might never get our ideas off the ground. Depends on if I can get a machine shop with the proper equipment to work with me. Unfortunately I do not have a CNC

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?

01-08-2020, 04:46 PM	#1 (permalink)
Hotrodz A True Z Fanatic Join Date: Aug 2012 Location: NW, AZ Posts: 9,330 Drives: 10 Nissan 370z Nismo Rep Power: 2684385	The bottom line...it is more about the block itself. I may not be able to take a beating at the 800whp+ regardless on how much the cylinder walls are reinforced. Sent from my SM-G965U using Tapatalk __________________ *Fast Intentions TT Installed and Tuned by Seb at SpecialtyZ 610whp 560tq:\|Fast Intentions 3" TT-TDX*\|SpecialtyZ/Fast Intentions 72 Row Oil Cooler\|SZ 6 Puck Clutch & Flywheel\|3GsCustoms\|Z1\|Wavetrac\|Hotchkis\|Whiteline \|Blitz\|Fortune Auto 500\|Fujimura\|SPL\|H&R\|TK\|TWM\|RPM Rollbar\|Sparco\|Next Level Performance\|TrackSpec\|AeroFlow Dynamics\|Pioneer\|

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