****LAYSHAFTS IMPORTANT INFO FOR YOU ALL****
Turbo Mini Forums

Tom - you gonna check the MPi one aswell???

Yes will do........

I have stripped my box today, N/A engine with only 98 Nm of torque. Box built new with only new parts 2000 miles ago! the layshaft from minispares cant be good! look at the pictures in the link: http://www.midtmini.com/index.htm

PS the diffpin is NOT from this engine!

Edited by miniminor63 on 15th Jan, 2006.

Hell look how bad it is with a N/a engine, cheers for showing us :)

MW

Best 1/4 mile 13.2 seconds @116 mph
First 5 port miniturbo to make over 200 bhp on a carb?
First 5 port miniturbo to make over 200 bhp on Injection?

http://www.mattwoodsphotography.com

the question is, where do we get good alternatives?

Well if thats what a mild n/a engine can do to them in a few miles it proves how cheaply manufactred they must be!!!

Ive just stripped an old metro turbo engine ive had for ages, not sure on its milage but the layshaft is in superb condition:):)

Edited by T3Tone on 15th Jan, 2006.

-MINI CLUBMAN 1380 TURBO-

Over the weekend he said...

André's engine revs to 9300rpm, so a mild N/A engine it isn't :)

but it doesnt have much torque, its torque that kills boxes you have told me :)

Yes, but it's still not a Mild N/A engine.

but why is such a poor product which bares little resemblence to a genuine rover layshaft sold as a geniune layshaft?

-MINI CLUBMAN 1380 TURBO-

plus remember that layshaft will be rotating at one hell of a speed if he is reving that high.

always looking for them bigger bunches of bannanas

Metro turbo weekend driver,Mini turbo in the making again!

I hope not:) The laygear will rotate fast of course. But its not like I have been running 9300 all day. its a 1071 BTW.

Just because the engine revs higher does not mean that the laygear nessasarly will do.

The speed the laygear rotates is related more to the actual speed the car is moving at - so even if you were revving the tits out of the engine in the lower gears the shaft will not nessasarly feel it.

Unless of course you have a very high diff ratio, 10 inch wheels and get it to 9000rpm in 4th! Then you would be going faster than your average mini turbo in 4th!

I'm with hoggy on this one...

The laygear speed is derrived from the engine rpm, the idler gear train ratio, and the gearbox headset ratio...

Take second or third gear for example - I'm assuming that full rpm's are seen in these?

eg
Std A-series
6500rpm
1:1 idler
(at a guess) 1.3:1 headset
hence, the laygear is doing 6500 * (1/1.3) = 5000 rpm.

9000rpm race engine
1:1 idler assumed
(at a guess) 1.3:1 headset
hence, the laygear is doing 9000 * (1/1.3) = 6923 rpm.

Edited by TurboDave16V on 16th Jan, 2006.

I agree with this one too as stated. but Hoggy said the layshaft was rotating, that I cant agree with:)

oh, I see!

Lay GEAR / Lay SHAFT

Fussy buggers! LOL!

Just because the mini is wierd in that the laygear is supported on a shaft, rather than as in integral unit supported on big bearings like any decent layshaft / laygear cluster should be...

yes hoggys a master gearbox builder (he does mine after all) so i'm sure it was just a typing error

Best 1/4 mile 13.2 seconds @116 mph
First 5 port miniturbo to make over 200 bhp on a carb?
First 5 port miniturbo to make over 200 bhp on Injection?

http://www.mattwoodsphotography.com

Where to stop and buy a Subaru though?

LOL!

yes typing error laygear was ment.

nice bit of maths there dave.

i also think oil plays a massive part here as well.

as on mine i used coma gold for a few years and showed some nasty layshaft wear on the first gear end ( although it hadnt been out for 4 years, the lay shaft that is lol).

weres t3tone was using millars for some time his lay shaft is about the same age and tha same shaft and was like new plus he has been turbo d for a year longer than me.

may bee somthing in it.

always looking for them bigger bunches of bannanas

Thats the millers CTV semi synthetic 20W50 with gearbox additive. Not sure if this "gearbox additive" has any real life effect but does seem a very good oil.

-MINI CLUBMAN 1380 TURBO-