S Reg. Scimitar overdive box bell housing and pro
Discussion
Hi Boys,
Need your Knowlegde again , Mines 4 speed Granada box on TVR 3000m 1976 3Ltr Essex. Looked inside bearing gone ,oil seals gone , teeth missing off gears & oil very shiney grey. Think gear box seen better days. Been looking round can get scimitar ( S Reg )overdive box bell housing and prop £50 from local scrap yard , will this fit ? or 5 speed box with bell housing and prop from 2.8 Capri £75.00 which one will be best or rebuild 4 speed ?????
Need your Knowlegde again , Mines 4 speed Granada box on TVR 3000m 1976 3Ltr Essex. Looked inside bearing gone ,oil seals gone , teeth missing off gears & oil very shiney grey. Think gear box seen better days. Been looking round can get scimitar ( S Reg )overdive box bell housing and prop £50 from local scrap yard , will this fit ? or 5 speed box with bell housing and prop from 2.8 Capri £75.00 which one will be best or rebuild 4 speed ?????
PATMAN
Overdrive boxes - I think there were two types one with the selector rods on the outside (definitely fitted to some Scimitars) and one not. TVR I believe did not use the rods on the outside version. Beware - The overdrive unit is not that strong, if you intend to have a trick motor in your car I personally wouldn't use the o/d box. You will also need to shorten the propshaft and relocate the handbrake.
Ford 2.8 box. Some people have fitted these but it has a weak first gear, can easily be broken by the torque of a trick Essex engine. Also the bellhousing is not a direct fit, although it can be redrilled to fit.
Another option is to use a Cosworth T5 box, again you'll need a new bell-housing and the gear change isn't that fast, but its a strong box.
Finally if you are ever going to sprint/hillclimb the car in a roadgoing (or modified roadgoing) class to meet the regulations you will need to retain the original four speeder.
In the 12 years I had my Taimar, I considered 5-speeders several times, but ended up retaining the 4 speeder, as its hassle to change, and the cars don't do a great mileage, so theres no real fuel saving benefit. Many people have changed to 5 speeders and prefer the lower cruising rpm. Its your choice at the end of the day, but go into it with your eyes open, as you don't want to put something in now that you will regret later! - Getting gearboxes out on an M in situ is a real pain (literally)!
davidy
Overdrive boxes - I think there were two types one with the selector rods on the outside (definitely fitted to some Scimitars) and one not. TVR I believe did not use the rods on the outside version. Beware - The overdrive unit is not that strong, if you intend to have a trick motor in your car I personally wouldn't use the o/d box. You will also need to shorten the propshaft and relocate the handbrake.
Ford 2.8 box. Some people have fitted these but it has a weak first gear, can easily be broken by the torque of a trick Essex engine. Also the bellhousing is not a direct fit, although it can be redrilled to fit.
Another option is to use a Cosworth T5 box, again you'll need a new bell-housing and the gear change isn't that fast, but its a strong box.
Finally if you are ever going to sprint/hillclimb the car in a roadgoing (or modified roadgoing) class to meet the regulations you will need to retain the original four speeder.
In the 12 years I had my Taimar, I considered 5-speeders several times, but ended up retaining the 4 speeder, as its hassle to change, and the cars don't do a great mileage, so theres no real fuel saving benefit. Many people have changed to 5 speeders and prefer the lower cruising rpm. Its your choice at the end of the day, but go into it with your eyes open, as you don't want to put something in now that you will regret later! - Getting gearboxes out on an M in situ is a real pain (literally)!
davidy
Hi Boys, decided to go the way of 5 speed box. will keep 4 speed bellhousing and pro just in case . Got 5 speed , bellhousing and prop from local scrap yard, bellhousing needs redrilling , box looks ok , being stripped seals etc. being replaced , if needed will exchange it for rebuilt one.Prop needs work will get it shortened when everything set up. Keeep u updated , any thoughts boys ???
PS. Anybody interested in Scimitar box , they will take everything off for £60 , contact me if anybody wants it. 07976407711 don't leave it too long . ( £60 was for overdrive box , bellhousing and prop.)
PS. Anybody interested in Scimitar box , they will take everything off for £60 , contact me if anybody wants it. 07976407711 don't leave it too long . ( £60 was for overdrive box , bellhousing and prop.)
[quote=PATMAN]Hi Boys, decided to go the way of 5 speed box.]
............................When it is as easy as this to type I should stay quiet...........the 2.8 box needs modifying (2.9 front bearing and input shaft shortening, the ORIGINAL bellhousing is the one that needs drilling and welding (cast iron welding, that is), the propshaft is the same, the gearbox crossmember needs changing for a new one, the gear lever needs modifying and a quick shift conversion so that you don't, have to chop a great big hole in the trim, the speedo cable needs changing and the speedo needs re-calibrating.
by the way.......it is the best thing you will do to a 138 BHP 3000M (read Davids comments below) Adrian
>> Edited by adrian@ on Monday 30th August 16:42
............................When it is as easy as this to type I should stay quiet...........the 2.8 box needs modifying (2.9 front bearing and input shaft shortening, the ORIGINAL bellhousing is the one that needs drilling and welding (cast iron welding, that is), the propshaft is the same, the gearbox crossmember needs changing for a new one, the gear lever needs modifying and a quick shift conversion so that you don't, have to chop a great big hole in the trim, the speedo cable needs changing and the speedo needs re-calibrating.
by the way.......it is the best thing you will do to a 138 BHP 3000M (read Davids comments below) Adrian
>> Edited by adrian@ on Monday 30th August 16:42
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