Back to basics

[heightswitch]

Right guys.
Lets stimulate some debate here.

M series cars use TR6 hubs on the rear end.

In theory I want to put approx 400 - 450hp through them what is available out there currently on the market. Any TR6 racers out there or phsyco's other than Mr Livesey who have a modified big HP car??

any of our yanky friends found other options but retaining the 4 stud 4.5" pcd.....

N.

[Electron]

Neil,

I know Cambridge Motorsport do these .... http://www.cambridgemotorsport.com/TR6-TR56-Transm... uprated jobbies that may help ...

Chris

[heightswitch]

Electron said:

Neil,

I know Cambridge Motorsport do these .... http://www.cambridgemotorsport.com/TR6-TR56-Transm... uprated jobbies that may help ...

Chris

I've seen these Chris but are cambridge motorsport still in business. I had heard that they went bump?? They do look the job for what I have in mind
N.

[thegamekeeper]

Neil, give me a ring when you get a minute

[heightswitch]

thegamekeeper said:

Neil, give me a ring when you get a minute

Bloody hell Steve, have you got insomnia too

I'll have me bacon sandwich then give you a bell when ity gets light here

N.

[TVR_owner]

heightswitch said:

Electron said:

Neil,

I know Cambridge Motorsport do these .... http://www.cambridgemotorsport.com/TR6-TR56-Transm... uprated jobbies that may help ...

Chris

I've seen these Chris but are cambridge motorsport still in business. I had heard that they went bump?? They do look the job for what I have in mind
N.

I bought some rear shoes form Cambridge Motorsport 6 weeks ago, so they are still trading in some form.

Second point - should I be worried (I don't have the power Neil is taking about, but I am on standard rear hubs - new)

[intermediate]

panic!
the next race at Spa 4-5 oct.,
the last one at Zolder
guess it will be a winter job!

[TVR_owner]

Adrian@ said:

John,
Julian Barter lost his 2nd rear wheel a few weeks ago, He races in HSCC. New stub axles are available and as it is racing, they should be treated as consumables IMHO buy new, know their history, determine a 'life' replace.
Adrian@
The first I saw was Leon Hickmans car at the entrance to Zolder years ago ...I see lots of bearings as I rebuild them (with the correct press tool) and 50% of the old units are written off as previous attempts to remove the flange fails, by simply trying to use 3 legged pullers etc.

Edited by Adrian@ on Wednesday 1st October 08:20

It's what I have done - all new, as all the hubs were bent on the race car when it was bought. They are cheacked after every race and I intended to replace them after a season unless I foulnd signs of wear before then.

[Electron]

Neil,

The Parts piece of the old Cambridge Motorsport is trading as per the web link but as always I'll defer to Adrian and the racers ......

Chris

[Slow M]

heightswitch said:

I want to put approx 400 - 450hp through them

Neil, Is this for an "old girl of 60's vintage?"
Will you be going for an engine spec that is along the FIA regs? If you're building a 289 from the bottom up, I may have some Carrillo rods with 7/16 bolts that suit your needs. What torque do you expect to make? I was told by a Mr. Steve Ferron from California to expect to break quill shafts with a built up 302.
I've decided to go with Nissan 240 hub, bearings, outer CV, disk brakes. The bolt pattern is 4 on 4 1/2". My design locates the hub +-16mm away from the upright which has also had to be modified. It also moves the wheel mating surface outward by over 1". In retrospect, I'd go with fabricated steel uprights but I'm too stubborn (spell S-T-U-P-I-D).
You could do a much more elegant design by machining a new steel bearing carrier (which I'm too cheap (spell S-T-U-P-I-D) to do. This could potentially set the wheel mating surface at +-the same as the original. If you wanted to use cvs and still run drum brakes, consider the center bore of the drums too.
Bernard.

[heightswitch]

Slow M said:

heightswitch said:

I want to put approx 400 - 450hp through them

Neil, Is this for an "old girl of 60's vintage?"
Will you be going for an engine spec that is along the FIA regs? If you're building a 289 from the bottom up, I may have some Carrillo rods with 7/16 bolts that suit your needs. What torque do you expect to make? I was told by a Mr. Steve Ferron from California to expect to break quill shafts with a built up 302.
I've decided to go with Nissan 240 hub, bearings, outer CV, disk brakes. The bolt pattern is 4 on 4 1/2". My design locates the hub +-16mm away from the upright which has also had to be modified. It also moves the wheel mating surface outward by over 1". In retrospect, I'd go with fabricated steel uprights but I'm too stubborn (spell S-T-U-P-I-D).
You could do a much more elegant design by machining a new steel bearing carrier (which I'm too cheap (spell S-T-U-P-I-D) to do. This could potentially set the wheel mating surface at +-the same as the original. If you wanted to use cvs and still run drum brakes, consider the center bore of the drums too.
Bernard.

Nope. Its going to be for another 2 old girls of 60's vintage. one the old way and the other a lot more modern.

I could tell you but I would have to kill you...

My Griffin runs a 302 block with 68 hipo 289 heads, 280h cam roller rockers and weiend dual plane inlet. MSD ignition. relatively mild tune probably about 285-295hp

My existing rear end is exactly how TVR intended and we will see how it stands up to a years racing before switching to modified rear set up.

Neil.