Performance Engine Rebuild

[Gussie2000]

Bigger cylinder heads,reprograming the ECU's software,etc but i have no idea if engine tuning parts are on the market for our 3.5L.

Also adding a more powerfull cranking system that offers an higher compression (more air per fuel ) will improve performance,but again,no idea if there any of those aftermarket parts for our engine in that category.

The 3.5L engine has a compression ratio of 9.1:1 or something similar at sea level and in order to gain more performance you got to pop up the compression @ no less then 12.1:1 + according to my knowledge,but i can be wrong.

As of today the only item that surely improved the VX's performance is the supercharged.

[Hotsauce]

Cost per hp is going to be very high on this car. You can't add more than about 40hp without running out of fuel map on the ecu

And because of the weight, even if you add 100 hp, its will just be less slow.

Also bear in mind that out transmission is not far from its torque limit on the stock engine.

John C.

[Riff Raff]

Hmmm, a basic engine rebuild is gonna' cost in the ballpark of $3K--$4K. With the rest of your VX's non-engine related components having that many miles on it as well is asking for something else to break later on. Your VX would probably quickly turn into a can-of-worms and become a serious money-pit. Economically speaking, it might be best to sell your VX and get another vehicle (VX or other) that's more sound by jacking-up your VX's radiator cap.

[nfpgasmask]

I have to ask, if your VX motor is ok right now, why mess with it? Are you just trying to solve the oil burning issue?

A well cared for VX motor should go to at least 200k I would think.

Bart

[WormGod]

In this case, I would just buy a performance truck. The cost will far outweigh the gains. And I fear the gains (if any) will have your VX dead or in the shop quite occasionally. Were it my $$, I would just go with a simple rebuild with some updated/new guts.