Engine, Intake, Exhaust Modifications to your Normally Aspirated Hyundai engine. Cold Air Intakes, Spark Plugs/wires, Cat back Exhaust...etc.

Compression ratio!!

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Old Aug 23, 2002 | 09:50 AM
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Default Compression ratio!!

If you were to install 2 STOCK head gaskets how much would your compression drop too.
Im not sure but it looks like the stock gaskets are about 1mm thick.
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Old Aug 23, 2002 | 12:13 PM
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DO NOT use twin gaskets, the seal between the block and heads are already one of the weakest link, especially under high compression or forced induction circumstances. Go for either a copper or steel(plyed)gasket that meets your specs. It may be expensive, but if you wanna go with either of the above I also reccomend a stud kit for better force distribution.

Up to you man.
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Old Aug 23, 2002 | 02:14 PM
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Just bite the bullet and buy you a set of lower compression cast pistons from UFB. That should satisfy you until you turn up the boost even further.

The gasket is a half @ss method of doing things.
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Old Aug 23, 2002 | 10:48 PM
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Thanks for the INPUT guys i was just trying to look for a cheaper solution.
BTW when installing NEW pistons LETS say the UFB cast iron Pistons is it recommended to machine the Sleeves or are they just drop in Pistons.
Thanks!
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Old Aug 24, 2002 | 12:44 AM
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If you want to rebore the bottom end it makes more sense to have the bottom end resleeved. Boring it out will reduce sleeve thickness, and if you want to either up compression, go N20 or turbocharge the engine, it will be more worth your while to have the sleeves replaced to go with the overbore pistons, if those are what you choose.

I don't know squat about UFB products, but I'm sure there are many other ppl here that do.

Good luck.
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Old Aug 27, 2002 | 04:23 AM
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If you are STILL not using the head spacer, go get it machined thin.
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Old Aug 27, 2002 | 07:39 AM
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Dude, getting a cheaper solution is why you had so many problems with the turbo to begin with. Cant learn your lesson eh?
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Old Aug 27, 2002 | 08:27 AM
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The whole problem is with NOT installing the HEAD spacer in the first place.If i have done this from the beginning i wouldnt have any problems with the creeping and all the HEADACHES!
Im installing a CUSTOM 3inch downpipe if this doesnt rectify my problem im installing the HEADSPACER and if it creeps up and hits 13psi then its still safe and SCREW EVERYTHING
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Old Aug 27, 2002 | 09:44 AM
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No, your problem is not doing the learning, work, and not building the kit yourself, but instead buying a kit we know has problems getting setup right (Random) and not having half a clue what to do when something goes wrong.

You should buy the ballistic hypereutic pistons like most everyone said becuase then you wouldnt have a problem with boost creep, as your engine could handle the higher boost pressures.

It sounds like you need a larger downpipe. Either the 2.5" or th 3" pipe will be fine, though I feel the 3" pipe will be better for your problems. Either the wastegate is too small, in which case you either need to bore it out, get an external wastegate, or get a bigger turbo OR the downpipe doesnt merge the discharge from the wastegate and turbine well. A bigger downpipe will only help if the latter is true. If your wastegate is too small, you'll still have boost creep, no matter how large the downpipe is and no matter how high the compression is.
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Old Aug 27, 2002 | 01:36 PM
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Larger downpipe will just add more boost everywhere (will at LEAST give you more boost creep) the big problem is your wastegate not being able to control the boost,you must have a problem in this area(wastegate)
have you tried running without the wastegate actuator connected? By that i mean don't hang the rod tp the wastegate so it will be open at all times
Denis
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