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gregsupra4

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Ok to answer some of the questions you have.

 

This conversion included these parts.

 

Custom exhaust manifold made in house by our fabricator.

T60 Turbo.

50mm Wastegate.

2mm Head gasket.

Waldro 255gph fuel pump.

100mm 4core FMIC.

Custom made stainless hardpipes.

XSpower Dump valve.

SAFC,AVCR

All Silicone, induction and clamps.

 

Mods to complete:

Head removal and exhast port match including replace head gasket.

Fuel damper bypass,

Upgraded MAP.

Fuel line intake and return mod.

Oil feed and Sump return mod.

 

Testing:

 

Quite an intresting few hours on this.

 

Wastegate was set-up using a 3psi spring using the ACVR to allow turbo to boost to 8psi.

 

1 st run was very surprising to say the least AFR through the rev range never went above 14.9 and never went below 12.2.

 

2nd run after completing the SAFC adjustments provided us with 14.6 and 12.1 across the range with an AFR of 14.4 at max boost at 5500 rpm.

 

Power was also quite suprising giving a top reading of 317 rwhp.

 

Whilst the HP figure was quite an eye opener this rolling road has always given a figure above others so I would put the real rwhp at around 290/300.

 

Road testing was a joy, the car pulled hard and was very crisp on the throttle boost came in around 2600 and maintained all the way to red line through all 5 gears, had a little pull against our R33 and left it behind.

 

 

Problems:

 

There were a few.

 

1: The job is a bitch to do

2: Not enough tea supplied.

3: Waiting for external parts suppliers.

4: Duff electronics units supplied ( SAFC DOA )

5: Piss taking staff.;

6: Not enough hours in a day.

 

To be fair we must give credit to all the guy's on the US NA-T Fourm who supplied us with a wealth of information even though they could not get their heads around that pre 96 Jap spec NA's do not use a Karmin MAF.

 

Would we do another one ?

 

YOU BET.

 

If you would like more information please give us a couple of day's to recover.

 

Thanks.

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Ok to answer some of the questions you have.

 

This conversion included these parts.

 

Custom exhaust manifold made in house by our fabricator.

T60 Turbo.

50mm Wastegate.

2mm Head gasket.

Waldro 255gph fuel pump.

100mm 4core FMIC.

Custom made stainless hardpipes.

XSpower Dump valve.

SAFC,AVCR

All Silicone, induction and clamps.

 

Mods to complete:

Head removal and exhast port match including replace head gasket.

Fuel damper bypass,

Upgraded MAP.

Fuel line intake and return mod.

Oil feed and Sump return mod.

 

Testing:

 

Quite an intresting few hours on this.

 

Wastegate was set-up using a 3psi spring using the ACVR to allow turbo to boost to 8psi.

 

1 st run was very surprising to say the least AFR through the rev range never went above 14.9 and never went below 12.2.

 

2nd run after completing the SAFC adjustments provided us with 14.6 and 12.1 across the range with an AFR of 14.4 at max boost at 5500 rpm.

 

Power was also quite suprising giving a top reading of 317 rwhp.

 

Whilst the HP figure was quite an eye opener this rolling road has always given a figure above others so I would put the real rwhp at around 290/300.

 

Road testing was a joy, the car pulled hard and was very crisp on the throttle boost came in around 2600 and maintained all the way to red line through all 5 gears, had a little pull against our R33 and left it behind.

 

 

Problems:

 

There were a few.

 

1: The job is a bitch to do

2: Not enough tea supplied.

3: Waiting for external parts suppliers.

4: Duff electronics units supplied ( SAFC DOA )

5: Piss taking staff.;

6: Not enough hours in a day.

 

To be fair we must give credit to all the guy's on the US NA-T Fourm who supplied us with a wealth of information even though they could not get their heads around that pre 96 Jap spec NA's do not use a Karmin MAF.

 

Would we do another one ?

 

 

 

 

 

YOU BET.

 

If you would like more information please give us a couple of day's to recover.

 

Thanks.

 

 

I hope that's either a typo or I'm reading this wrong but 14.4 At WOT on boost, Please tell me it's a typo :rolleyes:

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Guest Terry S
Sorry still shagged after working like a donkey.

 

Lets correct that typo: 12.4

 

Too many 14's in my head at the moment.

 

Still too lean for longevity

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Still too lean for longevity

 

Thank you Terry

 

Best WOT AFR varies with the engine combination. Natural aspirated engines will make best power between 12.0:1 richest and 13.2:1 leanest. Forced induction combinations like to be richer than a similar NAS engine, but should never be leaner than 12.5:1 and may go as rich as 11.0:1 for high boost on pump gas taking into account that 97/99 ron will always be used and the AVCR is set to run 3psi on setting A and 8psi on setting B the car and owner will only use the B setting for short blasts................

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12.5 = best power....but close to det

11.7 = slightly less power but ever-so much further from det!

 

Correct!

 

I would not run 12.5 on and everyday car ,couple of pulls on a dyno with bum cheeks clapping listening for det and a drag run maybe, but on the fuel we get here let alone Ireland I personaly would not go that lean and would rather sacrifise some power for longevity.

 

 

Also is that DP welded to the turbo housing ?

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Looks very much that way mig, greg why go to all the trouble of the headgasket then only be able to run 8psi in short blasts and 3psi daily?

 

 

The reason for doing the head gasket is the customer in question at a future date is going to upgrade to larger injectors and a stand alone ECU at which point we will be looking to run higher boost.

 

Why not do all the above from the start (the same constraint most of us mere mortals have...) cash flow.

 

Regards

 

Sam

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