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[Carrera RSR]

My car is going on a dyno on Monday to sort out the fuelling etc. Currently it starts and runs fine hot or cold. Head was rebuilt last year. All elbows, vacuum hoses have been replaced. It has a refrubed fuel metering head, refurbed injectors, new fuel pumps, refurbed throttle body, new top end/turbo gaskets, charge tube braket in place, new serviceable items eg spark plugs, leads, distributor cap etc. etc.. All that should have been replaced or refurbed has been done. It comes on boost at +/- 2750 and with a full 0.7 bar pressure. However it is not giving me full power beyond 4000rpm, cannot get it to rev beyond 5000rpm and is averaging 10mpg (imperial). It feels quick but not 'faaast' !! I'd guess its running at about 125bhp rather than 170bhp.

Any other pointers for me before Monday or for the dyno shop to sort out whilst its there. Is is just a timing/fuelling/AFR adjustment, WUR issues/adjustment......

I know there are many threads plus the resuscitation sticky but as I have now done the majority of items I feel I am nearing the end but not quite. At £80 for the first hour + £50 for additional hours + parts etc. it could be an expensive day or a very cheap and easy AFR adjustment (wishful thinking)

Thanks
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1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
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[Grenadiers]

Could be timing is off, retarded a bit, or, vacuum advance is not working correctly.
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'83 944 Track car.
'88 924S Track car.
'89 944 Turbo
2004 Winnebago Vectra monster RV
2012 Jeep Wrangler
2014 Kia Soul
2001 Ford F350 powerstroke

[Cedric]

Check ignition and run with a wide band lambda, that will probably reveal most of possible problems. The hour rate seems pretty nice, i hope you can solve the problems..
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1980 924 Turbo
www.instagram.com/garagecedric/

[Carrera RSR]

[Carrera RSR]

Happy days

After two hours of tweaks and re runs my car is now running as it should. Main problems found and rectified was the ignition was too retarded and fuelling was too rich. Power now comes on strong and revs out at 6000rpm (not tried beyond this) and I can now say its fast. Final power figures show 158bhp which is 12bhp down on where it should be from new. Tech at the dyno said he was pleased with that and didn't want to advance the ignition too far to avoid knocking.

Next on the list is a new set of GAZ shocks and new discs and pads. Hopefully this can be done next week in time for its 30th birthday on the 18th March
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1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252

[Cedric]

I guess it was measured on the rollers? Its really not possible to compare to factory figures since there are to many variables that are uncertain. How many hp did you have at the wheels ?

Glad you got it running ok, I have GAZ on my 931 to, apart from some english tolerances at the front dampers which needed some home modding to mount they are great. I hope they have improved the build finish at the front now. Are you gonna change spring setup?

Whats the AFR looks like in numbers?
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1980 924 Turbo
www.instagram.com/garagecedric/

[Carrera RSR]

Printer was bust at the dyno centre so I was unable to get the full results. I arrived back after they put another car on so couldn't see the results on screen. To be honest the car drives 100% better than before, and my 'butt in the seat dyno' tells me its far quicker so I am happy. A few more bhp could have been gained by advancing the ignition further but at a risk of knocking. A £130 well spent.

I am going to use a 924/944/968 race car garage in Birmingham called EMC to set up the GAZ shocks and springs, larger ARB's, poly bushes, new discs and Pagid pads. They have heaps of knowledge in full race, track day and road set ups. My car will be a compromise as it will be used on road and track. I hope to drop the car around 50mm. The springs at the front will be stiffer and the rears will have helper springs which gives more options than torsion bar alone.

http://www.emcmotorsport.co.uk/

I am currently undecided whether to strip the interior in favour of a full cage and buckets for a race look and weight or leave stock.
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1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252

[Cedric]

Please keep the interior, it seems to be very tidy car, would be a shame to trash it...But a racing seat on the drivers side could be a nice upgrade. It really gives track driving a new dimension
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1980 924 Turbo
www.instagram.com/garagecedric/

[Carrera RSR]

[Cedric]

The carpets weigh almost nothing. Although there are a pretty thick layer of insulation under it. Keep the original carpet but remove the insulation if you want to keep it tidy. The thick insulation are under rear carpet, under the seats and under the foot well carpet. I wouldnt get through all the trouble with a cage just for track days. A roll cage at maximum, its nice when you roll over, and its a nice place to fit belts. Also doesnt ruin the usability and looks of the car. But its your car, your choice Good luck in getting it on the track, it will be loads of fun !
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1980 924 Turbo
www.instagram.com/garagecedric/

[Khal]