TVR 1972M Build Thread

TVR 1972M Build Thread

Author
Discussion

GAjon

3,721 posts

212 months

Thursday 13th December 2018
quotequote all
TVRMs said:
Correct Alan, I was confused smile
Cross threaded?

TiM3

Original Poster:

89 posts

223 months

Thursday 13th December 2018
quotequote all
TVRMs said:
Time,

Are you incorportaing the uprated lower diff restarint smile

Yes these plates connect via polybushes to a bracket which bolts to the back of the diff. As ever not quite as pretty as your solution but should do the job.


TiM3

Original Poster:

89 posts

223 months

Thursday 13th December 2018
quotequote all
GAjon said:
Did you not consider helicoiling them?

Nice work on the chassis.
Thanks, I'm really looking forward to getting it back although just found out it'll be the wrong side of Christmas frown

Suppose I could have considered helicoil, but there's no real load on that bracket. It wasn't stripped just corroded so solid heads snapped straight off and the bolts had to be drilled out!

anonymous-user

53 months

Friday 14th December 2018
quotequote all
TiM3 said:
TVRMs said:
Time,

As ever not quite as pretty as your solution but should do the job.

My chassis work on the race car was done by an ex-F1 fabricator. I cheated. smile



TiM3

Original Poster:

89 posts

223 months

Saturday 5th January 2019
quotequote all
Not much to report currently, progress has slowed right down as I wait for my chassis, due back mid Jan.

In the meantime I cleaned up my T5 box which was a bit corroded. It's had a recent rebuild otherwise I would have stripped and had the casing vapour blasted. Instead it's old school toothbrush and Solvol Autosol...



Talking of vapour blasting, I have found a local chap who has done a lovely job on my rear uprights.



I've also been gathering together all the fixings needed for the chassis build.



I cleaned up and inspected the Salisbury diff I'm installing in lieu of the Spitfire diff. It's actually heading off to have an LSD fitted soon but I just wanted to peek inside and check the main components were undamaged. Please forgive the chrome, it came like that...



Not sure why pictures are always sideways... sorry!

anonymous-user

53 months

Saturday 5th January 2019
quotequote all
Tim,
Cooling...I used an Ali Chim 500 radiator.
Air ducted through the rad and it runs on the stat. First 1000 mile never above 88 Deg C.
smile

TiM3

Original Poster:

89 posts

223 months

Saturday 5th January 2019
quotequote all
That's useful info thanks, I'll look into that. Plan had been to get one in from the states as they seem to have endless variations. But all the shipping and import adds up!

anonymous-user

53 months

Sunday 6th January 2019
quotequote all
Alternative oil cooler install worked well with the Chim rad too.

Not sure if you've see it?



Expansion tank is Chim smile

Astacus

3,363 posts

233 months

Sunday 6th January 2019
quotequote all
TVRMs said:
Alternative oil cooler install worked well with the Chim rad too.

Not sure if you've see it?



Expansion tank is Chim smile
Look at that lovely clean chassis and all that shiny stuff! - Resto - envy! smile

anonymous-user

53 months

Sunday 6th January 2019
quotequote all
Astacus said:
TVRMs said:
Alternative oil cooler install worked well with the Chim rad too.

Not sure if you've see it?



Expansion tank is Chim smile
Look at that lovely clean chassis and all that shiny stuff! - Resto - envy! smile
Keeping them clean's the hard bit smile

the other tim

136 posts

146 months

Monday 7th January 2019
quotequote all




I cleaned up and inspected the Salisbury diff I'm installing in lieu of the Spitfire diff. It's actually heading off to have an LSD fitted soon.

[url]|https://thumbsnap.com/rryZChm1[/url


Which lsd are you going to have fitted?






















TiM3

Original Poster:

89 posts

223 months

Tuesday 8th January 2019
quotequote all
Current plan is Powr Lok with ramp angles set to suit the cars weight. Only problem is there doesn't seem many options where to have it done and it's pretty expensive too!

Dollyman1850

6,316 posts

249 months

Tuesday 8th January 2019
quotequote all
TiM3 said:
Current plan is Powr Lok with ramp angles set to suit the cars weight. Only problem is there doesn't seem many options where to have it done and it's pretty expensive too!
What do you mean by Ramp angles set in a powerlok? smile
N.

anonymous-user

53 months

Wednesday 9th January 2019
quotequote all
Dollyman1850 said:
TiM3 said:
Current plan is Powr Lok with ramp angles set to suit the cars weight. Only problem is there doesn't seem many options where to have it done and it's pretty expensive too!
What do you mean by Ramp angles set in a powerlok? smile
N.
Neil is being mischeivious Tim.

John Reid at Grantura Engineering will sort it for you or AJS Engineering - had good service from both.

Alan at AJS built a 4.1 gripper diff into a mag casing for me but he aslo specialises in Salisbury rebuilds. John has rebuilt three Salisburys for me, including revising of ramp angles.

What ratio or you going for?

Dollyman1850

6,316 posts

249 months

Wednesday 9th January 2019
quotequote all
TVRMs said:
Dollyman1850 said:
TiM3 said:
Current plan is Powr Lok with ramp angles set to suit the cars weight. Only problem is there doesn't seem many options where to have it done and it's pretty expensive too!
What do you mean by Ramp angles set in a powerlok? smile
N.
Neil is being mischeivious Tim.

John Reid at Grantura Engineering will sort it for you or AJS Engineering - had good service from both.

Alan at AJS built a 4.1 gripper diff into a mag casing for me but he aslo specialises in Salisbury rebuilds. John has rebuilt three Salisburys for me, including revising of ramp angles.

What ratio or you going for?
Not at all.
What I would say though is beware of companies saying that they are altering ramp angles. I have read up and researched quite a lot on the 4HU and Most companies building and re-building these diffs are NOT altering ramp angles.... If you are unsure then simply ask the proposed company how and what it is doing to the diff to alter the ramp angle.... Maybe a further discussion to be had over on the Lilley Wilkinson facebook page :-) I would still maintain that the best all round diff to go in a road car would be an ATB. Plate diffs will ultimately be quicker on a lap of a circuit but only if they are set up perfectly to suit the driver and the car. :-)

TiM3

Original Poster:

89 posts

223 months

Wednesday 9th January 2019
quotequote all
TVRMs said:
Dollyman1850 said:
TiM3 said:
Current plan is Powr Lok with ramp angles set to suit the cars weight. Only problem is there doesn't seem many options where to have it done and it's pretty expensive too!
What do you mean by Ramp angles set in a powerlok? smile
N.
Neil is being mischeivious Tim.

John Reid at Grantura Engineering will sort it for you or AJS Engineering - had good service from both.

Alan at AJS built a 4.1 gripper diff into a mag casing for me but he aslo specialises in Salisbury rebuilds. John has rebuilt three Salisburys for me, including revising of ramp angles.

What ratio or you going for?
I'm pretty sure it's a 3.31, it was an Ebay special out of a Cobra replica.

I'll try AJS Engineering they are a lot nearer than the other place I spoke too.

the other tim

136 posts

146 months

Wednesday 9th January 2019
quotequote all
Had a Salisbury Power-Lok 4hu for my V8 Vixen project, after much deliberation and advice I sold it, bought an open 4hu and a "Westfield" spec (ie set up for a 950kg car) Gripper from the manufacturers. Not used it yet, still building very slowly!!!!!! However a friend has exactly the same spec Gripper in a Tvr V8 engined Vixen and loves it after trying a standard Power-Lok (very hairy!!!) then an off the shelf Gripper (a bit better) and finally the "Westfield" spec unit (their name for the set-up).
Sonus has a Power-Lok in his Vixen, hopefully he's reading this thread.


Sonus

292 posts

182 months

Wednesday 9th January 2019
quotequote all
the other tim said:
Had a Salisbury Power-Lok 4hu for my V8 Vixen project, after much deliberation and advice I sold it, bought an open 4hu and a "Westfield" spec (ie set up for a 950kg car) Gripper from the manufacturers. Not used it yet, still building very slowly!!!!!! However a friend has exactly the same spec Gripper in a Tvr V8 engined Vixen and loves it after trying a standard Power-Lok (very hairy!!!) then an off the shelf Gripper (a bit better) and finally the "Westfield" spec unit (their name for the set-up).
Sonus has a Power-Lok in his Vixen, hopefully he's reading this thread.
I do indeed have a 3.31 Power-Lok in my Vixen. It was fitted by David Gerald in 2003 with feels like no alterations at all making the car a bit of a handful on loose surfaces where it will try to push straight ahead (understeer). I have not yet looked into changing it, but I do have an open 3.54 diff under the bench that I a considering fitting as a alternative while rebuilding the Power-Lok. Since my car won’t have as much torque as many of you I might just stick with an open diff. My local jaguar tuner has done a very good comparrison betjene different diffs, but it is in norwegian.

anonymous-user

53 months

Wednesday 9th January 2019
quotequote all
3.7 LSD (Salisbury) Ramp angles set for 900 kilo race car. No understeer, easy to drive, rear end not nervous at all.

Ramp angles were actually set up rather than only kidding.. smile

the other tim

136 posts

146 months

Wednesday 9th January 2019
quotequote all
TVRMs said:
3.7 LSD (Salisbury) Ramp angles set for 900 kilo race car. No understeer, easy to drive, rear end not nervous at all.

Ramp angles were actually set up rather than only kidding.. smile
As you've owned/used both how did the modified Power-lock and Gripper compare?