BTR 345 diff
BTR 345 diff
Author
Discussion

SILICONEKID345HP

Original Poster:

14,997 posts

261 months

Monday 9th June 2014
quotequote all
Can anyone tell me what RPM a 3.45 ratio will give at 70mph . Just trying to work out the difference going from 3.31 to 3.45, which is what most of the later cars have .

Classichim

12,424 posts

179 months

Monday 9th June 2014
quotequote all
That will be lower geared if I'm reading the numbers right. Faster pick up but less top speed!
Probably a couple hundred revs different! Get it in there.
I'm hoping someone can confirm this for me once and for all!

Classichim

12,424 posts

179 months

Monday 9th June 2014
quotequote all
Doesn't mine have a 308??? Did I imagine that number.
It's time I took this stuff in!

SILICONEKID345HP

Original Poster:

14,997 posts

261 months

Monday 9th June 2014
quotequote all
Well i`m fitting a new one with brackets supplied .i wanted to have it converted to ether 308 or 323 but it started to become very expensive ,I like the idea of lower revs at speed .

Steve Strange has a low mileage 3.23 for sale , he is being an ass ,he wanted £410 ,I offered £400, it did not sell on fleabay so i mailed him to ask if the £400 offer was ok ,he has now decided to put it up to £500 .. Fcensoredg idiot mad

What is it about TVR breakers !

Edited by SILICONEKID345HP on Monday 9th June 21:52

domV8

1,408 posts

211 months

Tuesday 10th June 2014
quotequote all
Probably only about 100rpm difference at a guess...

I have the 3.23 - and I think it's only a couple of hundred rpm difference from the 3.45 at best.

Daz - I was looking at getting my 3.23 rebuilt into a 3.45, but just doesn't seem worth of for the minimal gains vs. cost - your gains would surely be even smaller..?


Dom

SILICONEKID345HP

Original Poster:

14,997 posts

261 months

Tuesday 10th June 2014
quotequote all
domV8 said:
Probably only about 100rpm difference at a guess...

I have the 3.23 - and I think it's only a couple of hundred rpm difference from the 3.45 at best.

Daz - I was looking at getting my 3.23 rebuilt into a 3.45, but just doesn't seem worth of for the minimal gains vs. cost - your gains would surely be even smaller..?


Dom
So maybe i will go 308 in the future . Why did TVR fit diffs which came all the way from Australia . Will any other diff fit? ,seen loads on fleabay especially diffs from BMW`s ,they look close to exact ,they can be purchased for peanuts .


Edited by SILICONEKID345HP on Tuesday 10th June 17:55