VR + GIAC + Other goodies

[DubSteve]

Hey all

Just really seeing what everyone else thinks but.

I am thinking of combining the engine as it is with a mk4 head gasket, with the the cams and GIAC chip I have.

What benefits will the mk4 headgasket do as I hear alot of raves about the vortexers that do it.

The engine will also have a SCHRICK

[Golf Houso]

increases the comp by 0.5 a point doesn't it?

What about getting a set of 11.5.1 pistons to increase the comp some more?

[DubSteve]

Don't want to go the piston route just was thinking if it was OK really... Wanted to see what it will do to the VR as I have heard alot of the vortexers talk about it!

[Golf Houso]

Don't want to go the piston route just was thinking if it was OK really... Wanted to see what it will do to the VR as I have heard alot of the vortexers talk about it!

Well anything that increases the comp will make an improvement, its all about the comp from what I've read about the VR6's. I reckon the pistons with the HG will be the way to go man.

Are you running a stand-alone?

[Jarred]

...Are you running a stand-alone?

...and GIAC chip I have.

...

answer ?


(space)

[Golf Houso]

answer ?


(space)

I've got an exam in 3 hours, brains turned to mush...

[GoLfMan]

Stavros, your Compression ratio will be raised by the mk4 head gasket! Ask Seb about it

[DubSteve]

I am running the GIAC but what will the pistons set me back? I don't really want to do that cause I will most likely be driving this a fair bit in traffic!

[Tim]

As mentioned in my PM. I dont think id do it as ive heard of a few people having pinging problems in the warmer weather after going that route. Might end up being an expensive mistake for really not much extra power.

besides.. Shouldnt we be talking about decompressing your engine instead of increasing compression?!

[DubSteve]

As mentioned in my PM. I dont think id do it as ive heard of a few people having pinging problems in the warmer weather after going that route. Might end up being an expensive mistake for really not much extra power.

besides.. Shouldnt we be talking about decompressing your engine instead of increasing compression?!

Hmm interesting, well on the second part thats what the second engine was going to be for

[Jarred]

if it's only bumping up the compression .5 you shouldn't have trouble over standard if you run 98 & proper timing. i'm not sure what effect the chip will have on it, but i can imagine in combo with with cams and schrick, there should be a bit of a gain. might only be a couple of kws though reallistically.

just some general thoughts anyways

[Tim]

if it's only bumping up the compression .5 you shouldn't have trouble over standard if you run 98 & proper timing. i'm not sure what effect the chip will have on it, but i can imagine in combo with with cams and schrick, there should be a bit of a gain. might only be a couple of kws though reallistically.

just some general thoughts anyways

My biggest concern is that on a VR6 the ECU sorts everything out its self. If the tune is more aggressive than stock there will be less room for error. And if it does ping your only solution may be to mess around with different plugs or something. Lucas would be the man to chat to.. but yeah I vote dont do it!

[Shteifen]

i wouldnt think decompression would be needed unless boost is being introduced. from what i know, you want as higher compression as you can without pinging, so when boost is comin in without more space its going to ping hence decompress for more space yeah?
i wouldnt think any NA engine would need to be decomped. raising the comp on the otherhand....

by the way i believe there is a company that makes a chip that is actually tuned for a mk4 head gasket and maybe cams too. i cant remember who makes it but C2 comes to mind. i reckon that chip would be more suited to adjusting timing for higher compression than a regular generic chip.
or maybe it was GIAC, but it was definately advertised as a mk4 gasket file plus other things i think. might wanna look into that steve

-steve

[Tim]

i wouldnt think decompression would be needed unless boost is being introduced.

BINGO! This is what my comment was eluding to.

[DubSteve]

BINGO! This is what my comment was eluding to.

Tis right