Compression Cause a problem???
 

My car is running like crap since i had hondata s200, 550's, and my boost controller in. The car didn't run like this before it went into the shop. The shop told me that my compression was low and they said that the car will run like this until i replace my headgasket because it is too thick. Does this sound like BS?

i thought that a thicker gasket was supposed to lower compression for turbos...so from what i was told it sounds like theyre right...but dont hold me to this

sounds to me they don't know what they are doing and give you bull because they have no clue on how to tune the car

so the larger the gasket the better? i wouldn't think that at all

what do u mean by: car runs like crap ?

you ever been in a car that has timing off? It is 100 times worse
you can be going any speed any rpm and the thing will jerk you so hard that i am hitting my head on the back of my seat. the acceleration in first and second sucks because it seems to boggle, 3rd dosen't seem to have a problem, it actually seems that 3rd has a ton more power or the trubo kicks in a lot harder. It just dosen't feel good at all, it actually feels like i am causing more problems, even though the shop says that you shouldn't have any problems

The only thing that i don't understand is, if the shop knew that the compression was low by the first pass on the dyno....why in the hell would you put it on the dyno for numerous passes, putting it to the limit? It dosen't make any since to me. It just pisses me off that i spent 2000 for the car to run better than it was, and it comes out of the shop running 100 times worse. And they give me this bullshit saying that they can't do anything about it

If you're running high boost and your compression is high, you risk damaging something. This is when you'd use a larger gasket.

you see, the thing they are saying is my compression is low because the head gasket is too think, so i have to change it to a stock gasket. I am only running 12psi daily

are you running on stock internals?

No,
Here is the engine set up:
>Punched .004 over
>Arias 8.5 to 1 pistons
>Crower rods
>Total Seal rings
>Golden Eagle "Godzilla" sleeves
>KG Precision Engineering stage 5 head with SSI valves
>Custom made intake manifold
>Ported & Polished manifold and throttle plate
>JG Engine Dynamics 58mm throttle body
>Iceman exhaust manifold
>Turbonetics T3/T04E stage 3 : 50 trim turbo
>MHI intercooler
>Tial blow-off valve & 42mm wastegate
>Crane Hi-6 ignition
>Nology Pro-Fire coil & Hot-Wires
>NGK plugs
>MSD distributor cap

8.5 should be fine... and this should be posted in the turbo forum, not off topic. the shop is jerking you. they ****ed something up.

well, they are saying that the compression is at 7 to 1 maybe lower, because of that stupid head gasket

oh, thats different. 7:1 is too low

yeah, well i am getting the compression checked somewhere else to make sure. i don't trust these bastards at all. if my compression is right, that will be the kick in the ass for sure. In my opinion, it really dosen't seem like low compression, it just seems like a real bad air/fuel mix only becaue the car is doing the same thing as it was before i took it in the shop to have all this stuff done, but it was no where near this bad, it would only do it slightly when it was cold, but when everything warmed up, the car ran great. But now, it does it all the time

you really want to know what it sounds like at idle....it sounds like the car has a carborator on it

That's a good idea. That should pretty much tell you whether you can trust your shop or not. :yes:

god the talk of carbs makes me really want april and race season to get here NOW. lol bf runs a monte carlo purstock (circle track racing)

It sounds to me like its to low. With low compression pistons you probably dont need such a thick head gasket. I would get a little thinner one and see how it works. You may want to ask around and see how thick of one people suggest running with 8.5:1 pistons. Boosted maybe able to help you if you ask him.

I would post it in the Turbo forum and see what comes of it.:yes:

The thing that i want to know is what would a car with low compression be like? They said that it would run like crap with low compression buy what in the means of crap?

If the car is tuned, low compression will not cause any problems. The only thing it will do is yield considerably less off boost power and throttle responce. (and less on boost power) Sounds to me like the problem lies in the tuning... 8.5 is low compression for the street. 9.5-10:1 is ideal for street driven cars. Do you know the thickness of the headgasket that is in the engine now ??

This post should be moved to the Turbo Forum...

i'm not sure but you car's stock compression should be around 8.8-9.0:1. i reallyu didn't see the point of a thicker headgasket

Your car is definitely not tuned. Like drew said, even at a very low compression of 7:1, if it is tuned, you should be fine. It seems to me that there maybe some problem is fuel enhancement. Hondata will do what it is programmed to do. But it will not be effective if the support system cannot provide, which relates back to the fuel system or spark.

Honestly, if this drops down to the "low compression" issue. I would recommend to bring your compression back to stock. You ar not boosting that high anyway. Keep in mind that you can always tuned your stock (or high compression) set-up during boost using tuning devices and stand alone systems like Hondata.

Just a quick note: There are compromises of lowering the compression on a car for turbocharging puroposes. One of these risk is the power lost on the low end especially with a big turbo. Let us know......

well my thing is, the shop did more than 30 passes on the dyno when they had the car in for hondata and everything else. I really don't understand why the car still runs like shit. All they told me was if i changed the headgasket to stock, it will fix the problem that the car is having. I don't know how much of that i can belive.

I went to autozone and got the felpro headgasket, will that work just as well in compairison to the OEM honda gasket?

felpro is just like oe repalcement

the only thing that is bothering me about it is the gasket that i bought says 2.2l (f22a) engine 2156cc 1990-94. My car isn't the f22a.....sooo. And another thing about it, it is a 5 layer gasket, i thought that stock was 3

is your car an LX/DX

EX

nah the gaskets won't fit. the f22a and f22b1 are almost the same engines

so does anyone think that putting the stock head gasket on will make any difference in the way the car is runniN?

If you got lower compression pistons, then there is no reason to have that thicker headgasket. People usually put thicker ones on to lower the compression so they can handle more boost without re-building the bottom end with different pistons. However, it should still run alright, especially under boost, if it is tuned right. It might feel like a dog before the turbo spools, but it should be ok after that. I guarantee there are some other problems. First thing I'd do is get a stock head gasket back on it, then get that thing tuned right. And make sure you get the right one, the one you just bought sounds like it won't work.

I suggest getting a Cometic HP Head Gasket. I also think that it will run worse with the new gasket. The higher compression, the finer tuning that is required. I'd put the new gasket on and take it to another shop for retuning/troubleshooting.

your not burning oil or have bad valves do you? i'd get the head gasket replaced with the one Dr. Drew said, then get is back on the dyno, 12psi daily on a f22 seems high no matter how its built, expecialy if its driven hard.

BTW chris niiiiiiiiiice A1 !!

its no A... but at least its closed deck :cool: too bad i dont see much future for it