Turkish T5
Turkish T5
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Discussion

aide

Original Poster:

2,278 posts

188 months

Tuesday 30th July 2013
quotequote all
Knackered another gearbox on the M11on Sunday.

Up until then I was enjoying the new de-catted soundtrack!

Has anyone fitted an uprated gearbox to their Cerb?






Alistair H.

1,173 posts

295 months

aide

Original Poster:

2,278 posts

188 months

Tuesday 30th July 2013
quotequote all
Thank you.
Much appreciated.

aide

Original Poster:

2,278 posts

188 months

Tuesday 30th July 2013
quotequote all
Has anyone got this upgrade?

Any thoughts on it?

Is it stronger?

How long has it lasted?

Is it noisy in comparison to the original?


flyingdutchie

869 posts

218 months

Tuesday 30th July 2013
quotequote all
I,ve got one. It os behind my LS2 engine at the moment. I will swap it for a T56 later this year.

aide

Original Poster:

2,278 posts

188 months

Tuesday 30th July 2013
quotequote all
Was it a worthwhile upgrade?
I ask because I'm looking for an alternative that has the same ratios as the original but without the niggling doubt in your mind every time you press on..
Did it handle your LS2 with no problems?

Jhonno

6,430 posts

165 months

Wednesday 31st July 2013
quotequote all
Big issue is I believe the T5 (even WC) is marginal for the torque of these lumps.. Some stray over the threshold and break, others cope..

gruffalo

8,100 posts

250 months

Wednesday 31st July 2013
quotequote all
I had this done at Christmas, slight whine from the box but silky smooth changes, no issues so far.

flyingdutchie

869 posts

218 months

Wednesday 31st July 2013
quotequote all
The ls2 i have has 450 hp and 600Nm of torque. Until now it handled this, but i must say that it has hardly done any miles due to constant problems with the engineconversion i have. It shifts perfectly and they say it should handle this power. For me it is just that I want the original flywheel, clutch and gearbox behind the ls2. In my opinion it is better and i loose the ap clutch, custom flywheel, startermotor and questioned slave. Advantage ofthe T5 is the weight and it is compact.

aide

Original Poster:

2,278 posts

188 months

Thursday 1st August 2013
quotequote all
thanks for the the infor guys - looks like I might go down that route.

Brummmie

5,284 posts

245 months

Thursday 1st August 2013
quotequote all
What about a Tremec TKO 600? its a T5 on steroids.

aide

Original Poster:

2,278 posts

188 months

Thursday 1st August 2013
quotequote all
I looked at it but fear it's too big brum, I'd have to change the exhaust manifolds to get it to fit..

350Matt

3,873 posts

303 months

Thursday 1st August 2013
quotequote all
also if you're not already then use Castrol Syntrans 75W90 (was called SMX-S)gear oil as the ATF doesn't help the box at all

as there's no bearing under 5th gear and it just relies on metal to metal and the oil film

the only downside to the 75W90 is a cold gearshift is a little stiffer but once its warm the shift quality is superior to ATF

Jhonno

6,430 posts

165 months

Thursday 1st August 2013
quotequote all
350Matt said:
also if you're not already then use Castrol Syntrans 75W90 (was called SMX-S)gear oil as the ATF doesn't help the box at all

as there's no bearing under 5th gear and it just relies on metal to metal and the oil film

the only downside to the 75W90 is a cold gearshift is a little stiffer but once its warm the shift quality is superior to ATF
Cerbera's run the T5 World Class box...

Vee8ight

734 posts

163 months

Thursday 1st August 2013
quotequote all
Jhonno said:
350Matt said:
also if you're not already then use Castrol Syntrans 75W90 (was called SMX-S)gear oil as the ATF doesn't help the box at all

as there's no bearing under 5th gear and it just relies on metal to metal and the oil film

the only downside to the 75W90 is a cold gearshift is a little stiffer but once its warm the shift quality is superior to ATF
Cerbera's run the T5 World Class box...
And needs ATF for the syncros.....

Tanguero

4,535 posts

225 months

Thursday 1st August 2013
quotequote all
350Matt said:
also if you're not already then use Castrol Syntrans 75W90 (was called SMX-S)gear oil as the ATF doesn't help the box at all

as there's no bearing under 5th gear and it just relies on metal to metal and the oil film

the only downside to the 75W90 is a cold gearshift is a little stiffer but once its warm the shift quality is superior to ATF
Do NOT use anything other than ATF in a T5 World Class - you will destroy the synchro cones.

K4TRV

1,819 posts

276 months

Thursday 1st August 2013
quotequote all
Tanguero said:
Do NOT use anything other than ATF in a T5 World Class - you will destroy the synchro cones.
A truth or a lie???

I keep hearing this warning, but why would syncro cones be destroyed by using an alternative "synthetic" oil product, as opposed to Synthetic ATF??

Do you really mean destroyed? Why would Borg Warner build a box, one of a series of similar boxes and if another "other" transmission fluid was used it would destroy the syncro?

What will synthetic gear oil, transmission oil, or any other synthetic product do to the cones that ATF must be used?

Really not having a go, I just wish to understand the issue please, having had a Tamora for 11-months and not using Synth ATF - without an issue.....yet?????

Trev

Jhonno

6,430 posts

165 months

Thursday 1st August 2013
quotequote all
The theory is, gearbox oil is too viscous to lubricate, as it uses needle rollers.

Tanguero

4,535 posts

225 months

Thursday 1st August 2013
quotequote all
K4TRV said:
Tanguero said:
Do NOT use anything other than ATF in a T5 World Class - you will destroy the synchro cones.
A truth or a lie???

I keep hearing this warning, but why would syncro cones be destroyed by using an alternative "synthetic" oil product, as opposed to Synthetic ATF??

Do you really mean destroyed? Why would Borg Warner build a box, one of a series of similar boxes and if another "other" transmission fluid was used it would destroy the syncro?

What will synthetic gear oil, transmission oil, or any other synthetic product do to the cones that ATF must be used?

Really not having a go, I just wish to understand the issue please, having had a Tamora for 11-months and not using Synth ATF - without an issue.....yet?????

Trev
If you are not having a go then please don't accuse me of lying!

The warning is directly from the Borg Warner technical manual for the T5 World Class. The synchro cones have a friction material lining that the manufacturer says will be damaged by anything other than ATF. Secondarily the oil ways that feed the synchro dogs are designed for a low viscosity fluid and a traditional gear oil will not be able to provide adequate lubrication. Again this in the manufacturers information. Borg Warner designed a gearbox to use ATF and told you that is what it is designed to use, so just use whatever the fk you like. Its your gearbox.

K4TRV

1,819 posts

276 months

Thursday 1st August 2013
quotequote all
Tanguero said:
If you are not having a go then please don't accuse me of lying!

The warning is directly from the Borg Warner technical manual for the T5 World Class. The synchro cones have a friction material lining that the manufacturer says will be damaged by anything other than ATF. Secondarily the oil ways that feed the synchro dogs are designed for a low viscosity fluid and a traditional gear oil will not be able to provide adequate lubrication. Again this in the manufacturers information. Borg Warner designed a gearbox to use ATF and told you that is what it is designed to use, so just use whatever the fk you like. Its your gearbox.
I wasn't having a go - Truth or Lie was aginst the statement, not the author? Don't take it so personaly?

Thank you for the information, I hadn't seen it before.

Trev