abarth squadra storica forum
abarth cars - community => fiat abarth OT 850 -> 2000 => Topic started by: Rubino on February 03, 2013, 02:58:58 am
-
Hello all!
The past couple of months I have been looking at gearbox selection available to complete my OT (berlina) , Guy here I think likes the Porsche 901 series of boxes for the size,ratio's and how many have been used in the past ,also a Fiat 850 box turned upside down as Abarth themselves have done, In Australia we have a short supply of #901 gearboxes and even harder to find in good condidtion, as it is hard finding most parts that are readilly available in Europe!
I have a old (early 1990s) vw gearbox conversion from a previous Fiat twincam to 850 project done here, not happy with most of the conversion, yes it did work but with issues. This forum has been very good for infomation on my project "OT" but with many ways of doing the same job I have to find a way forward with parts easy to find and hopefully in reasonable condition, I have found this on another forum for Fiat group cars, this subaru gearbox shop will sell a reverse crown and pinion set for rear engine vehicles!
http://subarugears.com/
I don't have the knowledge on Subaru gearboxes for strength or ratios, but think they are 30 years younger with parts available here and do know how easy they are to find in any condition !
So far have found these gearboxes used on Fiat 850's - Skoda130, VW type3 (4speed), Porsche 911 early and late(#901) and now Subaru!
I look forward to your thoughts on subaru and any other gearboxes used!
Regards Rubino
-
not bead
-
I know that through the '80s in Australia, the Renault 16 gearbox was most used for rear engined Fiat and Vw conversions, later the Reno' 21 and 25 Gearboxes, is there any other type used? ....is the hard to get Porsche #901 the King of rear engine type gearboxes?
Rubino.
-
Renault 5 was on a moment populare
I recive complete plans to build in , but promis not to place on internet
-
Thanks Guy , Reno' 5 was never sold in Aus' so second hand box will not be available here, are the Reno' 8 or 10 any good? they are rear engine cars that were sold here.
Regards, Rubino
-
sorry ,not good . In R5 is gearbox before engine
-
Renault 8 or 10, rear engined?? are they stong enough , or to fat like VW?
-
R 8 /10 turns left our R. I think not strong enough becaus e older engines with less HP
-
A friend of mine is building a renault 5 alpine gearbox in his 600!!
They are strong enough to keep 150 to 200 BHP.
You can use a twincam engine without building them to anticlockwise.
Yes, the gearbox is in front of the engine in the R5, so move it to the back of the car and your ttheir. The renault 5 is also a clockwise engine!!
-
I think a Subaru 5 speed gearbox is very long!! It maybe not fit into a 850 chassis!
-
The gearbox of the renault 5 is the same type as the 21 and 25.
-
Fantastic Fred, Reno' 21 or 25 is easy to find in Australia! much better than a cheap Japanise box in a Italian car! I'm on my way to look at one this week!
Regards Rubino
-
Wow, this has been a long road to nowhere! I am back to the VW type-3 4pseed box for Ren and myself, mainly because Subaru has lots of types, ratio and torque strengths , non that will fit with the little effort of the VW for length, CV's etc! we have available to us in Australia adaptor plates, axels and a range of parts for the VW type, having driven a Lombardi scorpion with a Fiat 2ltr twincam in the tail and loved it, it has been in the car for a decade and reliable, take a look at the Cast Alloy adaptor we have with the flywheel on the dummy motor!
-
The renault gearboxes are not easy to find, Rubin, or is it that the use of an VW gearbox allready done by others so it is very usable?!
Looks good the adapter. It looks like the adapter I've got from PBS for my OT.
-
Yes Fred, the VW gear is easy to find, not expensive and all been done before!
-
probleme is that sending this kit to Belguim was more than kit cost in Australia.
-
Yes Guy, the weight of the adaptor would be as much cost as the gearbox to send! just as same for Porsche box to us here.
-
Well we did the Vw box to dummy Fiat twincam motor on the weekend, looks good in this position, now to do gearshift so it is not backwards because the VW shift is not as direct as Fiat!
-
That is looking good, Rubin!!!
Gearshift allready done?
-
Thanks Fred, not done yet, but is understood!
-
Hi Rubino. I have a Renault 16 box in my OT 1600 replica. Because of the gearchange mechanism being on the sid of the box I had to use a Hyundai Excel cable gearchange, which works quite well. We made a steel sandwich plate to adapt it to the Fiat engine. Interestingly, the Fiat and Renault clutches are just about identical.
-
Hi all!
Does anybody have experience or knowlage about usage of Alfa boxer gearbox in 850?
-
I think you must turn upside down the gearbox
-
I think you must turn upside down the gearbox
Interesting idea. Thanks! I'll check how can it work.
-
Guy, I saw some photos of yours (I believe) that looked like part of 124 bellhousing welded to front of 901 transmission.How did that work? Chuck
-
works very well . We did already for cars like this and no problems
-
Thanks Guy,I'm having trouble locating adapter plate so I may have to persue this option. Chuck
-
fwiw, I just ordered from Subarugears a reversing gear for a Subaru 6 speed gearbox to fit in VW T3 Doka.
Todd is willing to make engine adapters, but there might be a minimum order to fit a 124 block to the Subaru transaxle.
I will hopefully be getting the gearbox in the next week, so I can post some dimensions once it is here.
Hello all!
The past couple of months I have been looking at gearbox selection available to complete my OT (berlina) , Guy here I think likes the Porsche 901 series of boxes for the size,ratio's and how many have been used in the past ,also a Fiat 850 box turned upside down as Abarth themselves have done, In Australia we have a short supply of #901 gearboxes and even harder to find in good condidtion, as it is hard finding most parts that are readilly available in Europe!
I have a old (early 1990s) vw gearbox conversion from a previous Fiat twincam to 850 project done here, not happy with most of the conversion, yes it did work but with issues. This forum has been very good for infomation on my project "OT" but with many ways of doing the same job I have to find a way forward with parts easy to find and hopefully in reasonable condition, I have found this on another forum for Fiat group cars, this subaru gearbox shop will sell a reverse crown and pinion set for rear engine vehicles!
http://subarugears.com/
I don't have the knowledge on Subaru gearboxes for strength or ratios, but think they are 30 years younger with parts available here and do know how easy they are to find in any condition !
So far have found these gearboxes used on Fiat 850's - Skoda130, VW type3 (4speed), Porsche 911 early and late(#901) and now Subaru!
I look forward to your thoughts on subaru and any other gearboxes used!
Regards Rubino
-
Regarding FIAT motors and transaxles in general:
The 124 series run clockwise, so a reversing gear is required for a fwd transaxle to be used in a rear engine application in addition the differential needs flipping. With minor grinding, this can be done in a Subaru transaxle.
Subarugears in Australia sells reversing ring and pinion gears.
The 600/850 series run counter-clockwise, so NO reversing gear is required for a front wheel drive transaxle (from a fwd engine that runs CW) used in a rear engine application. But, the ring & pinion will run on the back side (or coast side).
So with 600/850 blocks you can conceptually use any transaxle from a FWD CW engine: Renaults, Citroens, Alfas, Subarus etc., but they will all load the back side of the pinion gear.
Running on the coast side could be a problem, as pinion gears are not designed for that. The solution, or trick, is to purchase a reversed ring and pinion, but NOT flip the differential. That way the power goes through the proper side of the gearing. At least that is the way I understand it.
Again, Subarugears sells reversed R&P's.
Subaru transmissions are strong like the Renault transaxles. Most are designed for 300HP and at least 225ft-lb of torque.
The only missing link is the engine/transmission adapters..but these can be custom made.
More info here:
http://www.thesamba.com/vw/forum/viewtopic.php?t=503586
-
Fiat 600 run clock-wise
Fiat 850 runs anticlock- wise
Simca 1000 runs anticlock- wise