Close Ratio G-box & Diff

[SeiW500]

Anybody got an idea of the cost of upgrading from standard Gbox/Diff (non-hydratrac) to Cose ratio box & 3.7/3.9 diff??? I'm thinking 3.7 would be the best for mainly road use?

[alex_gray255]

I did something similar last year. I'll send you some info tonight when I'm back home.

[aubrey9160]

Would you mind sending it to me aswell as its something im interested in.

[SeiW500]

alex_gray255 said:

I did something similar last year. I'll send you some info tonight when I'm back home.

Thanks, i have got your e-mail allready, i'm going to look into it with a view to getting it done over the winter. From Westfield ownership one of the best ugrades is getting the Gearbox/Diff ratios sorted!

[alex_gray255]

Fortunately, I had already sent the info to someone earlier on in the year so had it all nicely in an email

[Diablos-666]

alex_gray255 said:

I did something similar last year. I'll send you some info tonight when I'm back home.

Me too please. I got quoted £1k just for the 3.7 / 3.9 diff

[Targarama]

Diablos-666 said:

Me too please. I got quoted £1k just for the 3.7 / 3.9 diff

That's a good price if it includes fitting and new bushes. I paid around £1,200 for a 3.91.

[Granturadriver]

Me too, Alex.

It's for a friend who was disappointed to find out that he has not my 3.7 diff!

[Diablos-666]

I just checked the email..

It was £960 to rebuild the diff inc labour but not VAT

The CR box and diff was £2200 + VAT

[SeiW500]

Racing Green are doing a brand new Hydratrak 3.73:1 for £898.80 (including VAT & Surcharge)
http://www.thetvrshop.com/TVR/special_details/TVR%...
Great VFM but i think you need to change your prop aswell if the car is not allready fitted with a Hydratrack diff?

[BCA]

SeiW500 said:

Racing Green are doing a brand new Hydratrak 3.73:1 for £898.80 (including VAT & Surcharge)
http://www.thetvrshop.com/TVR/special_details/TVR%...
Great VFM but i think you need to change your prop aswell if the car is not allready fitted with a Hydratrack diff?

I don't like Hydratrak.

I do like the idea of a 3.73 final drive though, the T350 would certainly benefit from it. Our previous Cerbera was 3.73 and it had masses more torque - it made us really wonder about the pace of the T initially, sure enough, it's there - but you really have to wring its neck with the standard 3.4 diff ratio!

[magpie21]

alex_gray255 said:

I did something similar last year. I'll send you some info tonight when I'm back home.

Alex would you mind sending me this info too?

Thanks

[BCA]

magpie21 said:

Alex would you mind sending me this info too?

Thanks

Me too please?

[bobd]

John Read at Poulton will rebuild your existing diff or do an exchange for the ratio you want. Everyone uses him.
Close ratio box needs a minimum of 3:73 diff imho.
For me the best combo is standard box with 3:73 diff

[Targarama]

I used Topcats FWIW if you're darn sarth.

[Mattt]

Alex, not a criticism, but wondering why you offer to do things via PM rather than post on forum?

Noticed you did it for info about Diagnostics leads too.

[jrb43]

Targarama said:

I used Topcats FWIW if you're darn sarth.

+1 for Topcats who are an excellent setup and I can't recommend them enough! Warren has just put a 3.73 into mine and rebuilt the diff (+Nitrons). It's a hit all the way. Acceleration is much much quicker. Legal limits also now fit nicely into gears (it now pulls 30mph in4th and 40mph in 5th). On the motorway, it's a bit frenetic if you're going too fast so a good incentive to slow down.

[alex_gray255]

Mattt said:

Alex, not a criticism, but wondering why you offer to do things via PM rather than post on forum?

Noticed you did it for info about Diagnostics leads too.

Simple. In virtually all cases, people have had follow up questions. It's easier to answer them on email than here. Plus it's easier for me to quote figures I don't get held to later, which happened once in my past

I don't make that mistake again

[Mattt]

Do you run a garage? Why would people hold you to figures?

Doing things via email almost defeats the point of a forum.

[Targarama]

Mattt said:

Do you run a garage? Why would people hold you to figures?

Doing things via email almost defeats the point of a forum.

Agreed. If someone asks me how much something costs I'll tell them, no skin off my nose. The only time I'd go 'private' is when it comes to naming and shaming.