ALRIGHT I have been arguing about what is the comp ratio of the f22b1 motor, I thought it was 8.8:1 . my mechanic says its 9.9:1. So i ask him why if my comp ratio was 8.8:1 then why did he throw 9.2:1 wesico +20 pistons in there. He swears its a higher ratio then 8.8:1 . I beg to differ cuz i have seen the stats on the motor. But please someone tell me . If i am right or wrong

 

F22B1
This engine was used in the 1994-1997 Honda Accord EX and Acura 2.2CL. It was the first F engine to feature VTEC.

Specifications

Bore × Stroke: 85.0 × 95.0 mm
Displacement: 2156 cc
Valve Configuration: SOHC, 16 valves, VTEC
Compression ratio: 8.8:1
Max power: 149 hp (108 kW) @ 5500 rpm
Max torque: 147 ft·lbf (199 Nm) @ 4500 rpm

ok then why the hell would he put 9.2:1 pistons on a turbo motor. WHY WHY WHY ? This is pissin me off. 7000 and this is what i get !!! There better be a damn good reason why you would put these in there.

 

so tell that to your mechanic?

 

Just got off the phone with him after he calls me and reads the email I sent him, now he says ok I am right about stock , But for boost application epecailly running 25-30psi from my t3t4 turbo , he says that a 9 to 1 ratio is the most Ideal for boost, Couldnt argue with that cuz I am not too sure on that one. What is the best compression ratio for boost . I was always told that the lower the compression the better the boost , and the higher compression the better for N/A motors. He also says that the only performance rod for f series is carillo pro A - 800 bux. 600 for pistons, 1300 for darton sleeves. does this sound right to you , eagle doesnt make rods for f series. But my rods will hold 900 hp . WTF I paid for something that I wont never get to push to its limit, And the 500hp Ill get when its all done , Will be the most money spent on **** that I can use to its purpose. What do you think ?

 

You gave this dude $7000?

 

lower compression doenst mean more "POWER" with boost. It just helps you to not blow your motor as quickly. Your mechanic is a retard.. you could have a 400hp motor for 4000 easy, top to bottom end if you did some research and built it your self.. And why did you get it sleeved? The stock sleeves can handle tons of boost.

-Eric

 

I can't think of which rod exactly works but I'm pretty sure one of the H series rods will work in the F series motors. There may be a slight modification needed to make them work but I know I've read of others doing it. Try doing some research on here, you should be able to find it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by accord380whp &raquo;</TD></TR><TR><TD CLASS="quote">ok then why the hell would he put 9.2:1 pistons on a turbo motor. WHY WHY WHY ? This is pissin me off. 7000 and this is what i get !!! There better be a damn good reason why you would put these in there. </TD></TR></TABLE>

what is the problem?? some people in the FI forum here are running 10:1 pistons on boost. if it's tuned well 9.2:1 won't be an issue. calm down.

crower and pauter are the only companies that I know of that make f-series rods, and they are both over $700 for the set.

 

Well as others said sounds like your mechanic is all over the place with his information.

Generally you are right about the compression, higher compression is generally for n/a car and lower for boosted applications. Of course there are exceptions to the rule, like alcohol/ methanol race cars who run higher compression and boost because of the extremely high octane fuel, precise tuning, and constant rebuilding.

Basically compression when turbocharging will do a few things... low compression allows you to run more boost on pump gas, allows a bigger margin of error or safety in tuning but you do sacrifice some spool time and power per psi. Higher compression will spool a turbo faster, pump gas you cannot push quite as much boost, it will make slightly more power per psi, and also shrinks the margin of error or safety window in tuning.

As said above, the consesus is that around 9:1 is a good happy medium... you could go lower or slightly higher but that would be your preference on how you want to run and whatnot really (given what I mention above).

H23 rods are the same as your f22b1 rods or you can also use an H22 rod but if you do, you need to have to call whomever you get pistons from and have them move up the wrist pin slightly (to compensate for the slightly longer rod length of the h22 vs the f22/ h23).

IMO the prices you are being quoted are a little on the high side.

 

quick answer: the higher the compression the better as long as your motor can handle it.