to make sure the base tune was solid. Most of the tuning will happen at the track. I put a new 88mm turbo on the car and wanted to make sure every thing was working as it should be. With the 80mm turbo the car made 706/618 to the tire @ 25# of boost. So any thing above that and a safe tune was all I was looking for.
Well there was some breaking up. So we reduced the gaps on the plugs. Next pass was clean and made 26# of boost. We tried two more runs to increase the boost but it just wasn't happening. The first reason may be the non load dyno. The second and most likely the main culprit is the inlet to the turbo. The old compressor cover had a 5" inlet that I had a nice 5" tube going into the inner fender for fresh air. With a large conical K&N filter on it. The new race cover has a 5.5" inlet so the old set up would not work. So I put a screen over the inlet for now. Well when we were unstrapping it from the dyno I noticed the screen was being sucked into the turbo. So the screen must be a restriction. If the turbo can not get air in it can not push it into the motor.
But even then we decided to leave it as it was. The A/F was dead on and the timing conservative for now. The motor does not have ARP2000 rod bolts in it. So with the power level we were already at we decided to call it quits. We will see how it runs at this power level. Then a new light weight and 1500hp capable rotating assembly will go into the motor. As well as ported heads, solid roller cam and 160# injectors. Where does it stop? :rollpicard: hahaha
Anyways, here is the dyno graph.
Well there was some breaking up. So we reduced the gaps on the plugs. Next pass was clean and made 26# of boost. We tried two more runs to increase the boost but it just wasn't happening. The first reason may be the non load dyno. The second and most likely the main culprit is the inlet to the turbo. The old compressor cover had a 5" inlet that I had a nice 5" tube going into the inner fender for fresh air. With a large conical K&N filter on it. The new race cover has a 5.5" inlet so the old set up would not work. So I put a screen over the inlet for now. Well when we were unstrapping it from the dyno I noticed the screen was being sucked into the turbo. So the screen must be a restriction. If the turbo can not get air in it can not push it into the motor.
But even then we decided to leave it as it was. The A/F was dead on and the timing conservative for now. The motor does not have ARP2000 rod bolts in it. So with the power level we were already at we decided to call it quits. We will see how it runs at this power level. Then a new light weight and 1500hp capable rotating assembly will go into the motor. As well as ported heads, solid roller cam and 160# injectors. Where does it stop? :rollpicard: hahaha
Anyways, here is the dyno graph.
and :wtc:
