ROTORHP

Just wondering if anyone has done the single conversion without the rebuild on the engine, with good sucess. Or bad results too I suppose. My car only has 108000km(mid 60's in miles) and runs great, but I dont want anything to go drastically wrong. Just wondering if I would be able to play on a used engine. Would a compression test give me a good indication as to what I should do? I would kinda like to slow the "whipping of money" at my car, so if I could get away with it I just might, then I'll do the rebuild next winter. Thanks

Heisenberg

iTrader: (3)

Ill let you find out my results when its done. I just tested to see if the compression was ok. I really diddnt see any use in fixing somthing that wasnt broken. I was tempted to go through the motor and have some port work done but i figure it will probably break somtime in the near future anyways, so ill just do it then.

Im sure its probably "best" to have it gone through first, but not a requirement if your motor is fairly healthy.

BMike

Same here, I'm just waiting for good weather to tune. The only real major risk aside from having to take it all back apart is losing a turbine wheel when motor parts fly through it.

snagalittle

If it was me I would spend the money on the rebuild. I would have a huge street port done and then save for the single conversion. There is no use in spending 5k or more for a single having it on for say 3 4 months who really knows and then be looking to rebuild the motor. Plus if you wait for an apex seal to go out you are going to be replacing the turbine wheel and probably rotor housings. More money in the long run I would think plus more down time. But its your car and do go with what you think. I know i havent done everything the smart way.

ROTORHP

Thanks for the responses. The other thing I should probably mention is that the car does not see many miles in a year. I have owned it for 3 1/2 years and only put on 9000km on it. That should have a bearing as to justifying the rebuild.....

FD Rey

Tuning is the key factor here. If your motor was acting up before then that would have a huge role into the equation. But if you have a healthy 60k+ mile engine then you will be ok with strapping on a single turbo As long as you have someone that knows how to tune you will be ok. It's not like you're shooting for 500hp. From or conversations, you bought my old set up to put down just about what I was getting out of it. I also told you that if you got a Microtech I could of hooked you up with my map that way you had something to start with. But that's all irrelevant now. The key is TUNING and having enough fuel to compensate for the boost you'll be running with that turbo. Make sure you find someone with plenty of experience with the the PFC. Good luck!

ROTORHP

I was going to go with the microtech but couldn't justify the price difference. I do thank you though for offering me the map however Rey, thats great. The guy that I might get to do the tune is good with PFC's.... he is a distributor for apexi. If I decide not to use him( some guys think he is a tool) then I might use a guy in Calgary. I do plan on getting a good tune regardless. That was one reason why I was thinking of getting the engine redone, was so I could get in a streetport while I was in there and pretty much get me the 400rwhp mark, but you figured since the turbo was rebuilt that I might hit that anyway with a good tune.

Anyhoo....60000+ mileage engine with no probs in the past and good compression should get me a year of driving you think? about 3-4k?

snagalittle

Yes if it has no problems already I would think 3-4k easy. Like they said you’re not shooting for High hp numbers so it shouldn’t be too hard on the motor. But you never now when she (the car) is going to get mad at you and cough up an apex or coolant seal.

pp13bnos

iTrader: (1)

I have 50k miles on my motor and about 3k with the single. The car is tuned for 400rwhp on high boost, and 330rwhp on low boost. Engine seems to be doing just fine, but I just started saving for a rebuild too. CJ

FD Rey

You'll be fine man. Just get her tuned as soon as you put on the single.

aruba

i did a single on mine thinking it whould hold up but around 320hp
for a couple of months there was no compression
dyned like 300-320 at 10 psi
pt 70

ROTORHP

Did you engine have any prior problems that could cause the quick failure? How many miles were on it when you did the conversion?