My name is Greg and ive just moved to melbourne from Qld. About a week b4 i came down i dropped an Turboed L16 (with 1800 internals) into my 1600. Its a draw through turbo using a CD175 (big SU looken) carby. Its set up to deal with 13.5PSI using the boost to retard timing through a fabricated vaccum advance thingy.
At the moment it runs like trash. It wont idle and when i come up on boost it starts to ping so i have to back off. Its also over boosting to 15PSI. Its a brand new engine too so im freaking about how instantaineous the "leaning out leading to engine detination" thing happens. Its got adjustment on the boost retarder on the dizzy but i dont want to run boost that high anyway. Its a Turbo off an FJ20 apparently and the waste gate actuator is mounted on the back of the intake side of the turbo. If i were to shim the actuator arm back further with washers would that succesfuly lower my boost or would it change also where the boost comes in coz it would be opening the waist gate earlier or even strait away and needing more engine revs to bring it up on boost?
Have i confused you yet? Sorry im not good at explaining it and im only really new to the world of Turbos so all of my knowledge is only a few weeks old.
Also I have a 45 side-draft weber which i had wanted to put on but i understand that cos the weber doesnt have vaccume regulated fuel it may very well run like poo at low revs. Is this true in reality and how poo does it run (assuming that if its jetted to "on boost" fuel levels its gonna be spitting heaps too much fuel low down) In a nut shell am is the weber going to be leages better or too much of a pain and should i just give the SU looken thing a try.
Thats probably way too much for an email and i will probably end up going to a dyno tuner to check the car out anyway. So do you know anyone in town who knows carby turbo setups and is good and relativly cheap?
Any input at all would be greatly appreciated.
Greg Britton
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