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  Increasing compression ratio

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Author Topic:   Increasing compression ratio
Pierre
Gearhead

Posts: 349
From: France
Registered: Apr 2002

posted 06-13-2002 06:18 AM     Click Here to See the Profile for Pierre     Edit/Delete Message   Reply w/Quote
Using the cool web sites you guys sent me , I came up with a whooping 9.0 to 9.3 ratio

The engine is set up as follow: 302 with flat top forged aluminium pistons (big D cup for 2.02 valves), Edelb aluminium heads (60cc - 2.02/1.60), sporty cam but nothing too crazy(214/224 @ .050, lift .472/.496)Performer RPM intake + 600 cfm edel Carb.

Can I safely increase this number to 10 or 10.5 without taking ANY RISK ?
If yes, How should I do this:
Grind(a few 1/100 inch)the 1000$ heads
Change my pistons to pop-up type (like 302 Boss)
Grind the block the same amount

Or just drop the whole thing and enjoy my engine as it is

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Clark
Gearhead

Posts: 560
From: Rowlett,Texas
Registered: Aug 99

posted 06-13-2002 11:00 AM     Click Here to See the Profile for Clark     Edit/Delete Message   Reply w/Quote
Personally, unless there is some performance issue leave it alone, and enjoy running regular pump gas. If not the easiest way would be to change the Head gaskets to these thin one's I have heard about but I don't know how much this would change it. Plug the numbers in and see before doing this.

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69 351W Sportsroof Deluxe

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65_289
Gearhead

Posts: 676
From:
Registered: Jul 2001

posted 06-13-2002 03:07 PM     Click Here to See the Profile for 65_289     Edit/Delete Message   Reply w/Quote
A thinner head gasket would probably be the "easiest" way to do it, if you consider pulling the heads easy. Plus, there's not much risk, as opposed to angle milling the heads.

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Pierre
Gearhead

Posts: 349
From: France
Registered: Apr 2002

posted 06-14-2002 03:42 AM     Click Here to See the Profile for Pierre     Edit/Delete Message   Reply w/Quote
You guys are right ! I should probably leave it alone.

I just have this strange fever that gets me every so often to get my hands dirty in an endless quest for better performance even though my engine runs great now
Am I the only one out there with this problem ?

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Clark
Gearhead

Posts: 560
From: Rowlett,Texas
Registered: Aug 99

posted 06-14-2002 09:32 AM     Click Here to See the Profile for Clark     Edit/Delete Message   Reply w/Quote
No Pierre, it is like a beautiful woman, you can't keep your hands off her!

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Moneymaker
Administrator

Posts: 18280
From: Lyons, IL, USA
Registered: May 99

posted 06-14-2002 12:23 PM     Click Here to See the Profile for Moneymaker     Edit/Delete Message   Reply w/Quote
Compression is heat and heat is horsepower! I would compression the HELL out of it!

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Alex Denysenko
Co-Administrator and Moderator/ non 65-66 Mustang owner sensitivity co-ordinator

NHRA/IHRA/SRA member
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Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Part time secret agent license #0089
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The Barry of BarrysGrrl

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