944 close ratio gearbox...
#1
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Thread Starter
944 close ratio gearbox...
Anyone have any experience with close ratio trans builds in a 944? pros and cons? I am thinking of building one for my 944 NASA GTS1 car.
#2
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I too have considered it for a NASA GTS2 car. I seriously looked at R&P's but it seems like there could be an issue with the strength on the 4.11 I looked at so I ruled that out for now.
I know one person that supposively built a close ratio box but I havn't spoken to him yet regarding it. I will update once I do.
I know one person that supposively built a close ratio box but I havn't spoken to him yet regarding it. I will update once I do.
#3
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This for an N/A or turbo?
Turbo, you can put an S2 r&p and this works to great effect.
Turbo, you can put an S2 r&p and this works to great effect.
#4
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#5
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I know the 931 gearbox internals are renown for it's strength. Not sure you can make the r&p fit? Actually I don't think so, I think this is compatible with the G50 from memory.
#6
931 gearboxes share 915 parts in common, they also have notoriously weak syncros in them and 1st gear IIRC though it's been awhile (931 snail shell boxes, I can't comment on 915 boxes.). Late 968 6 speeds share parts in common with G50's.
#7
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I knew that......thanks Mike.
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#8
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Is your torque band really that narrow that it'll help???
#10
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Just make sure you dont have a turbo ring and pinion to start with. Someone on the west coast makes or supplies custom gears. If you running GTS-1 you should be making up 200hp at the flywheel with your 2.5l engine in full GTS-1 trim, stock gearing at Mid-Ohio should be fine, just make sure you have a short 5th gear in. You need the 275/35/15 rear tire to really get around MO fast. I will think about the gear guy and let you know, if i can remeber who it is. We are going to build a GTS-1 car for next year as it seems Cup is Dead at Mo and everyone's gone to GTS-1.
#12
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#13
#14
In the S2 the only gear that I feel worth replacing is 5th. But if you were going to go custom I guess you could do anything you want depending on the track you'll be running.
...200RWP from a 2,5L ??
...200RWP from a 2,5L ??
#15
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Thread Starter
Albins gears are what I have...3rd, 4th, and 5th...I understand that they can only be used in a Turbo or S2 gearbox. I would want to use the NA final drive though.
Right now I have 137 HP at the rear wheels. Engine is stock except for a Bursch header and Autothority chip.
Right now I have 137 HP at the rear wheels. Engine is stock except for a Bursch header and Autothority chip.