HomemadeTurbo - DIY Turbo Forum - 4g63 and 4g63t : big difference!!!

Quote:

Originally Posted by dsmjunkie

Posted in response to people who need to learn their ---- or pay amechanic to call them a retard.
I'm reffrencing on 1st gen 4g63's, since the 2nd gen 7-bolt is a crankwalking piece of ----.
First off the whole point of a turbo is a shorter stroke(higher rev's), and the ability to keep compression ratios within safe fuel delivery constraints(dropped compression balancing increase in volume of air delivery). The turbo block has a different rod and crank set-(dropped compression-7.6:1 vs (9.2:1). The head bolts do not match- close but your stll fucked. No tap point for the knock sensor is present, along with coolant and oil return taps, are present on the n/a engine. The same oil and cooling problems are present in the n/a head- along with cams that are to mild for the increased fuel and air. You can try to bolt up a turbo exh. manifold to a n/a block with a 14 lb. turbine, and and advance the cams, but you'll probably eating 16 valves. You could drop comp. with a copper head gasket and run a 7lb. or smaller turbine, but the stock ecu won't keep up with the fuel demands, you'll have to run on open loop to defeat the mass air flow, and your exh. valves
will eventually burn- if you dont detonate to the point where your thrust bearings and wristpins take a big smelly ----. Get a turbo long block, and a control unit that can handle whatever boost levels you are running, or an ecu compatible with the car your engine came from. No offense, just learn your ---- before you start turnin' the wrench. ;)

So basically by posting this ignorant rant, you just wanted to get some "mechanics" to tell you your a retard?
Lets see, ive purged most of that dsm bullshit from my brain, but i remember a few tidbits.

1. Only about 30% of 7-bolts crank walk. The 2g head flows better at lifts @ and below .300"
2. Stroke has exactly nothing and nada to do with a turbo engine. N/a has the same stroke as the turbo. Idiot.
3. Low compression was due to the fact that mitsu likes to halfass everything. Turbo engines make more power with higher compression, as long as they dont detonate, which can be delt with simply by properly tuning the unit.
4. The 6-bolt heads have the same size ports and flowrates.
5. IF you do run a knock sensor, there's this invention hold on its ------- amazing.......................ITS CALLED A DRILL!!!! GOD forbid you should have to mod something!!!!
6. Deck height is the same.
7. All stock mitsu ecu's eat ----. Stand alone and be done. Your gonna need one to make any real power anyway.
8. I have yet to see a thrust bearing on ANY engine destroyed by detonation. Links please.
9. Oil squirters are exactly useless in a racecar, just so you know.

Any monkey can turn a wrench, but not everyone knows why. Your a bit on the latter side I think buddy. :P