Technical data for Grantura Mk3

[Karvid]

Dear all,
as a new member I would like to ask my first question here.

Do anyone know where I might find technical data for setting up the suspension on my Grantura Mk3 correct. For instance caster angel, toe-in (front and rear).

I have been racing with my car for a couple of years now, but would like to get tip on what the best wheel setup is.. I might be way off!! I know this setup depends on so... many variables, but I should appreciate all info I can get..

Thanks

[GreenV8S]

Ian Massey-Crosse would be the person to ask - as long as you aren't racing against him!

[karvid]

Thanks,
unless he comes to sweden...I don't think we will be racing against each other.

Is Ian Massey-Crosse a member here or where can I get in touch with him?

Does anyone have the original setup (toe-in, camber and caster for rear and front suspension)?

Regards
Kenneth

Edited by karvid on Wednesday 7th June 23:09

[granturadriver]

You will find some details in the Grantura handbook regarding the Mk I, II and III. You can get a copy from the TVR Car Club, sometimes they are sold on ebay. Check out the Grantura registry under http://people.zeelandnet.nl/serel/ where you will find several Grantura owners and their contact details.

Martin

[karvid]

granturadriver said:

You will find some details in the Grantura handbook regarding the Mk I, II and III. You can get a copy from the TVR Car Club, sometimes they are sold on ebay. Check out the Grantura registry under http://people.zeelandnet.nl/serel/ where you will find several Grantura owners and their contact details.

Martin

Thanks Martin,
I already got copies of the TVR Car Club. They don't say anything of the wheel angels for the Mk3.

//Kenneth

[SuPaSpArK]

Adrian venn is looking after the Massey-cross car now....give him a ring at Exactly TVR. I'm sure he will point you in the right direction!....so to speak.

Website: www.exactly-tvr.demon.co.uk/

Edited by SuPaSpArK on Saturday 10th June 09:13

[karvid]

SuPaSpArK said:

Adrian venn is looking after the Massey-cross car now....give him a ring at Exactly TVR. I'm sure he will point you in the right direction!....so to speak.

Website: www.exactly-tvr.demon.co.uk/

Edited by SuPaSpArK on Saturday 10th June 09:13

Thanks SuPaSpArK,
I just sent Adrian a mail.

//Kenneth

[Rob Mk2a]

Try Chris Conoley at Cambridge Motorsports / Mass Engineering. I believe they prepare the Wards light blue car as seen at Spa Pau etc.
Rob Begbie or Nick Lees also race Grantura's.

I'm not which one Ian Massey-Cross cars is - but if its the Le Mans car at the Birkett 6 Hours it appeared to have excess roll....

Rob

[sybaseian]

Rob Mk2a said:

Try Chris Conoley at Cambridge Motorsports / Mass Engineering. I believe they prepare the Wards light blue car as seen at Spa Pau etc.
Rob Begbie or Nick Lees also race Grantura's.

I'm not which one Ian Massey-Cross cars is - but if its the Le Mans car at the Birkett 6 Hours it appeared to have excess roll....

Rob

The Le Mans car was sold by Ian M-C to my friend who took it out for its first race outing at goodwood Revival last year. It was also his first time actually driving the car in anger as he was waiting for MSA paperwork to be completed for the Revival. The car finished 10th in the Fordwater Trophy and has since had the suspension adjusted.

[mk1S1293]

Hi,
A dear friend of mine is going to prepare an early Grantura Mk3 to Historic Racing.
His car was built by TVR with a 1622 engine.
We looked at the FIA homologation papers list and it sounds like that an early mk3 cannot be homologated with the original 1622 MGA engine.
I know that there is a British guy racing the ex-works Le Mans car YFR 751.
Is there anyone able to put me through him?
I would really like to ask him how he got a HTP from FIA with the 1622 engine.
We would be really pleaed to receive also th complete specification of the YFR 751 as it was in period and any other relevant information in case.
My friend would love to join the Le Mans Classic and I know that the mk3 is allowed to use the 1622 engine only.
Thanks to everyone for helping me!

[Granturas]

mk1S1293 said:

Hi,
A dear friend of mine is going to prepare an early Grantura Mk3 to Historic Racing.
His car was built by TVR with a 1622 engine.
We looked at the FIA homologation papers list and it sounds like that an early mk3 cannot be homologated with the original 1622 MGA engine.
I know that there is a British guy racing the ex-works Le Mans car YFR 751.
Is there anyone able to put me through him?
I would really like to ask him how he got a HTP from FIA with the 1622 engine.
We would be really pleaed to receive also th complete specification of the YFR 751 as it was in period and any other relevant information in case.
My friend would love to join the Le Mans Classic and I know that the mk3 is allowed to use the 1622 engine only.
Thanks to everyone for helping me!

The Grantura MKIII is homologated twice!
Once by FIA Recognitian number 68 in 1962 with 1622 cc
and second with FIA Recognitian number 160 in 1963 with 1800 cc

[Thurner Fan]

Granturas said:

mk1S1293 said:

Hi,
A dear friend of mine is going to prepare an early Grantura Mk3 to Historic Racing.
His car was built by TVR with a 1622 engine.
We looked at the FIA homologation papers list and it sounds like that an early mk3 cannot be homologated with the original 1622 MGA engine.
I know that there is a British guy racing the ex-works Le Mans car YFR 751.
Is there anyone able to put me through him?
I would really like to ask him how he got a HTP from FIA with the 1622 engine.
We would be really pleaed to receive also th complete specification of the YFR 751 as it was in period and any other relevant information in case.
My friend would love to join the Le Mans Classic and I know that the mk3 is allowed to use the 1622 engine only.
Thanks to everyone for helping me!

The Grantura MKIII is homologated twice!
Once by FIA Recognitian number 68 in 1962 with 1622 cc
and second with FIA Recognitian number 160 in 1963 with 1800 cc

With regard to the Le Mans Classic, is has been apparent for a long time that the organisers turn a bit of blind eye to engine size. Most, if not all, of the Granturas that have run at LMC (and Le Mans Legends for that matter) have had at least 1800cc engines. They are also highly likely to have been running limited slip diffs, 5 inch or even 6 inch wheel rims and larger Weber carburettors (45DCOE) none of which were homologated for the 1962 Mk3. In addition, the track may have been set to the wider dimensions that were not homologated until April 1964 (Homologation papers No. 160 for the TVR Grantura Mk3 1800).

Many people are confused by the two sets of homologation papers and the distinctions between them - and this includes several racers and, it would appear, race organisers/eligibility scrutineers.

The fact is that almost every TVR Grantura Mk3 racing in Europe today has been built to the specification contained in Homologation papers No. 160, created for the TVR Grantura Mk3 1800 in April 1964. This permits the use of the wider track, wider wheels and limited slip differential, none of which were permitted in the Homologation papers No. 68 created for the TVR Grantura Mk3 in August 1962. Interestingly, these items, when taken together, add up to probably more overall advantage than simply the larger engine provides as, according to those who race them, the Grantura gains most ground on the competition as a result of its nimble handling and ability to exit corners swiftly.

Now, back to the Le Mans Classic. The careful reader will have noted that the date of the earlier homologation papers is later than the date of the 1962 Le Mans race. So, it is perhaps the case that the owner of YFR 751 has successfully argued that his car should be allowed to run as a prototype, but presumably with the correct 1622cc engine. Still doesn't explain why the others have been let in using 1964 specifications. For sure, no Grantura with an 1800cc engine and the extra 1964 homologated bits would be allowed into the Ben Cussons/Carol Spagg pre-63 GT series races.

TF

Edited by Thurner Fan on Thursday 25th October 12:35

[Thurner Fan]

Karvid said:

Dear all,
as a new member I would like to ask my first question here.

Do anyone know where I might find technical data for setting up the suspension on my Grantura Mk3 correct. For instance caster angel, toe-in (front and rear).

I have been racing with my car for a couple of years now, but would like to get tip on what the best wheel setup is.. I might be way off!! I know this setup depends on so... many variables, but I should appreciate all info I can get..

Thanks

Another option could be to contact Nigel Reuben (http://www.nigelreubenracing.com/) although the details of race setups may well be considered proprietary knowledge that is only released to paying customers. And maybe even those customers don't get told what the numbers are! It is, after all, business to the race prep guys.

TF

[Grantura1800s]

I believe the Yellow Grantura at Le Mans Classic 2012 was not even running an MG engine and was allowed to race. At least the inspectors were not even recognising that it was not an MG engine.

[Fiscracer]

Thurner Fan said:

the details of race setups may well be considered proprietary knowledge

TF

Quite

I'll tell you what, you can buy my set up numbers for my Mk3 for what it cost me to get there.....no quite as much as the all steel race engine but not a lot less