What sort of power have people run on a standard T5 box ?

 

max 450 bhp some peopel will say they do 500 bhp but not for long i should no as i have 511 bhp and it keep blowing the gear box so i say best to say 450 or be gental with 500 bhp but then wahts the point of haveing that power

 

450....i'll be sound then

 

its torque that will kill a gearbox

 

400+in mine but fucked the last one,this ones not been giving a kick in yet

 

a tvr box will be a bit better.

thats what i have.

 

hi steve

i have blown 2 on the harvey engine first one stirped 3rd gear

second one fooked 5th i think the harvey engine was 400+ ftlbs


marco

 

Steve,

you KNOW that a standard box won't last.....you need a decent box.

 

Is it a T5 in the MK2 then Steve??

What Torque have you got now mate?? a fooking lot i'd imagine..

 

With the trackday approaching fast a T5 will do nicely IMO

You have exceeded Quaifes rating of that gearset by about 200hp

That box PollyX is running sounds good tbh

 

its gonna have to do for beds LOL....

NO BOOST

 

I'm sure its not slow running 400hp

 

borg warrner rate standard T5 with these part Numbers

1352-000-249

1352-000-251

both are 300 ftlbs


and the rest are rated @ 175 -230+ ftlbs


marco

 

What about going Jag box?

 

My mates 3 door apparenty runs the box out of Rainbirds old Saph, dead standard iirc

Its since spent years in a 400hp 420lb ft 3 door being abused and has never missed a beat. Ok it whines like a straight cut now but it still works.

IF you can find a half decent T5 Dingy and you turn the power down a little then it should hold together, it might even be better than that Quaife you had in there

 

[quote="JonnyBravo"]Its since spent years in a 400hp 420lb ft 3 door being abused and has never missed a beat. Ok it whines like a straight cut now but it still works./quote]


hi joh n

thats because the bearings are fooked and it's on it's last legs

it's ready to break mate : thast the warning you get when it's starts whining

marco

 

@ Steve getting the excuses out now.

 

Its how the torque is delivered that breaks things.

Get karl to slow the torque curve a touch.. do you run a hydraulic clutch?


If you do you could put an inline valve in to cushion the gearchange.

with the gas on i've hit 550ftlb without breaking the box.


Lee

 

Mate i want to last longer than you did at dono and not come back on a truck LOL...

 

dingy



get a decent box then.

mine cost me Ł5.5k.

 

[quote="marco polo"] Or it has no oil in it

 

JonnyBravo

pmsl!

 

One of the guys driving the M3 at Donno is a gearbox specialist and Alpina mentioned it to him, he asked Alpina if he had checked the gearbox oil and he never has since he first got it

How the fuck that car has stayed so reliable I'll never know

 

defo not johny thats bearings 100%

 

My point was that he hasn't even checked the basics

He was told the same, but he wont spent a thign on it until its fallen to pieces

 

A friend of mine used standard T5 for 2 years, using semi-slick tires and 677hp and NO problems whatsoever. Chaged it for a gearboxman kit, but the original never failed.

I`ve seen boxes last for 7-8 year with bad whining so I would not panic about a little noise

 

Ive found that above about 400 hp the gears in the T5 actually dissapear when making a change flat out , its bad enought that the ratios are shit but on several occasions ive lost places when trying to find 3rd in particular , bloody things !

 

Dave,


You have WAY to much money............

 

I havent broken a box yet but have had two that sounded straight cut

One so bad that you could hear the car way before you saw it

I have ran over 2.5 bar on a T4 so that must have given the box a very hard time.

Its starts by getting noisy on overrun only after a few hard runs but gradually gets so it whines all the time.

Both boxes changed up and down gears well and both were fitted with the same quickshift.


My new getrag box is so slick comapared to the T5 alothougth with a slighty longer change

 

staffi

not anymore with the spending i have done.



lol, not as mch as you.

 

Get yourself an Evo son.............

 

staffi

i can't Pete.

i don't love them more than the escort.

i just like throwing my money away on them.