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11.5:1 compression?

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Old Apr 9, 2010 | 05:08 AM
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95ludeVTEC's Avatar
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Default 11.5:1 compression?

hello guys, im picking up an h22a1 to replace my blown h22a1. but this motor has mahle 11.5:1 compression pistons,scat h beam rods. is there anything wrong with that? and it comes with a fidanza flywheel and exedy clutch. how good are these fidanza flywheels? ive read quite a bit of good abouyt em i just figured id get an opinion.
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Old Apr 9, 2010 | 05:16 AM
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Default Re: 11.5:1 compression?

Are you going to run stock engine management or has the motor been tuned and comes with an EMS?
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Old Apr 9, 2010 | 05:17 AM
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Default Re: 11.5:1 compression?

well stock ecu for now, but if need be i will get something to tune it
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Old Apr 9, 2010 | 05:23 AM
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Default Re: 11.5:1 compression?

Are those cast pistons or has the block been sleeved? Is this motor freshly built or have you seen it run and drive a car?
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Old Apr 9, 2010 | 05:30 AM
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Default Re: 11.5:1 compression?

im pretty sure they are aluminum alloy, but the motor is still fresh it was built a few years back by a prelude owner around here and he sold the car and had the motor still so. im going to rip it apart and check it out when i get it tomorrow.
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Old Apr 9, 2010 | 10:49 AM
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Default Re: 11.5:1 compression?

If you're getting a good deal, go for it. That's a pretty healthy combo that is a good platform to build on. Sounds like the guy knew what he was doing, but as usual you will want to check over the motor. If they don't have shop records, you should consider putting in new bearings so you know for sure all your clearances are within spec.
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Old Apr 9, 2010 | 11:18 AM
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Default Re: 11.5:1 compression?

yeah the dudes dad owns a shop and he seems like he knows his ****. im getting it for 500 cash he wants 700, but i know i can get it for 500. but he said the motors been sitting for like 2 or 3 years so im going to check it over and re torque all the bolts and anyway, and lube it up. so ill see what happens. i just wanted to know what you guys thought
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Old Apr 9, 2010 | 11:39 AM
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Default Re: 11.5:1 compression?

Just that piston rod combo cost 800+
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Old Apr 9, 2010 | 12:43 PM
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Default Re: 11.5:1 compression?

Haha I know plus the price of the exedy clutch and fidanza flywheel. So like 1200 in the pistons,rods, and clutch. So im going to see what's up. The deal is bangin so..
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Old Apr 9, 2010 | 02:21 PM
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Default Re: 11.5:1 compression?

yeah its a bargain, almost too good of a bargain.
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Old Apr 9, 2010 | 02:39 PM
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Default Re: 11.5:1 compression?

Hahah yeah I know, kinda seems fishy ishh.
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Old Apr 9, 2010 | 03:04 PM
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Default Re: 11.5:1 compression?

I prefer the ACT over the Fidanza
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Old Apr 9, 2010 | 06:59 PM
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Default Re: 11.5:1 compression?

i guess we will see what happens lol. im not gunna buy a new one unless needed cuz this comes with it.
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Old Apr 12, 2010 | 06:46 PM
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Default Re: 11.5:1 compression?

so i checked over the motor it is legit. i dropped it in Saturday night. didn't run and had reset the timing, now i have a direct short. i cant wait to see how she runs!
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Old Apr 12, 2010 | 07:17 PM
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Default Re: 11.5:1 compression?

do not run that motor with the stock computer. Wrong ignition timing.
________
Chevrolet camaro

Last edited by q16racer; Mar 13, 2011 at 04:31 PM.
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Old Apr 12, 2010 | 07:35 PM
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Default Re: 11.5:1 compression?

Originally Posted by carnot
Are those cast pistons or has the block been sleeved? Is this motor freshly built or have you seen it run and drive a car?
just so you know, those mahle pistons are forged. and they are more than likely meant to be ran in stock sleeves or FRM cylinders.

OP... sounds like a good deal but you have to remember its a used engine. i would go through the basics and start with a compression test. there will be things to look for once you get it running like, oil consumption, functional sensors(if included), irregular vibrations, leaks, ect. i've never used fidanza myself but i havent heard anything horrible about them. i have a couple buddies who have used their flywheels. i can tell you they use a replaceable friction plate which is good in some cases because you dont have to have them resurfaced but you do have to purchase a new friction plate so often. and who knows how long they last, it all depends on how you drive. you wont know what kind of a deal you got until its running and running well or not. hope the deal works out great for ya bro. let us know how it turns out

Last edited by BigBlock22; Apr 12, 2010 at 09:57 PM.
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Old Apr 13, 2010 | 07:36 PM
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Default Re: 11.5:1 compression?

yeah i checked out the whole motor and ran through it all and everything was good. the kid knew what he was doing but i had to reset the TDC and timing cuz it was way off. and isnt running right now i ran into a huge problem that im about to make a post about.
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