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Old 20 Feb 2008, 17:15 (Ref:2133466)   #1
GBRM
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Homologation Papers

A bit of a long shot but does anyone have the homologation papers for a 2.3 Vauxhall Firenza/Magnum/Viva HC? I need to check the carb types and sizes.

I've looked at the MSA web-site and I can't work out if it's going to cost me £27 or £54, plus there's three differant sets for the 2.3 and it seems like a lot of money for a very small bit of information.

Blooming typical, I have all my late Dad's homolgation papers but they are for the RX7, 635CSI, Rover 3500, Opel Monza, Opal Kadett, TVR Griffith, Morgan and a few others but none for the Vauxhall!!

Am happy to do a trade of info on any of the above if it helps??
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Old 20 Feb 2008, 17:59 (Ref:2133492)   #2
Farbrooke
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Hi Gregor
Papers 5565 - April 72 - main papers are GRP 1 - Twin Zenith 175CD
but you don't want those
Extension 9/6V - valid in Grp 1 from 1st April 1975
Twin Delorto DHLA 48's - known as kit 25177 - including manifolds and airbox in photo - also a proper 4 speed ZF box
All sorts of GRP 2 goodies in other extensions as well including Old Nail style bodywork but no more carb variations
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Old 21 Feb 2008, 09:49 (Ref:2133986)   #3
GBRM
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Originally Posted by Farbrooke
Papers 5565 - April 72 - main papers are GRP 1 - Twin Zenith 175CD, but you don't want those
Extension 9/6V - valid in Grp 1 from 1st April 1975
Twin Delorto DHLA 48's - known as kit 25177 - including manifolds and airbox in photo - also a proper 4 speed ZF box
All sorts of GRP 2 goodies in other extensions as well including Old Nail style bodywork but no more carb variations
Thanks Malcolm, I agree that the Zenith's are no good!!
I thought it was Dellorto 48s but I was hoping you were going to see 48 Webers too. Oh well, the search for "reasonably-priced" Dellorto 48s goes on and I'll keep using my 45s for now.
Out of interest, was the ZF homolgated not a 5 speed unit?
Also, what would they have used the Group 2/Old Nail stuff in?
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Old 21 Feb 2008, 10:14 (Ref:2134007)   #4
Farbrooke
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Applogises - tis a 5 speed - was hoping you could tell me when the 5cm front and rear wing extensions were used - rear has the forward air scoop and front appears bowed at the rear to form the vent - no bulging bonnet or fuel injection - but 16 valve twincam head - discs alround with vented front - twin plate clutch -Dry sump - alloy bellhousing - all Grp 2 - much more but not enough for a Grp 2 old nail family
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Old 21 Feb 2008, 10:52 (Ref:2134029)   #5
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Originally Posted by Farbrooke
Applogises - tis a 5 speed - was hoping you could tell me when the 5cm front and rear wing extensions were used - rear has the forward air scoop and front appears bowed at the rear to form the vent - no bulging bonnet or fuel injection - but 16 valve twincam head - discs alround with vented front - twin plate clutch -Dry sump - alloy bellhousing - all Grp 2 - much more but not enough for a Grp 2 old nail family
You got me wondering if there was a 4 speed ZF too, phew!!
I do have a load of homolgation papers for Old Nail at home, plus I know who has all of Billy B's paperwork, so I'll have a look.
As far as I know Group 2 ended in 1973/74 and that's when Special Saloons took over, DTV certainly didn't do any Group 2 stuff after then.
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Old 21 Feb 2008, 11:38 (Ref:2134075)   #6
Farbrooke
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Farbrooke has a lot of promise if they can keep it on the circuit!
If you had a set of papers that match Old Nail that would maybe allow use of Gabriel's car today - reincarnation of 70's racers, seems to me, has yet to include much more than Grp one and half - dry sumping and 10inch / 12 inch rims are yet to be rediscovered.
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Old 21 Feb 2008, 12:06 (Ref:2134088)   #7
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When I get home I'll dig out, scan and e-mail what I have. If you need more I can probably get copies of the others too as the twins have all of them.

Also, have you seen this thread http://tentenths.com/forum/showthrea...78#post2134078
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Old 24 Feb 2008, 12:21 (Ref:2136543)   #8
vjay48
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I had a 4 speed firenza box,it was a standard casing with straight cut gears,i assumed it was for group one! The original gears were made by jack knight,box came from gerry johnstone. Worked well,changed to 5 speed getrag which was from a vx490,various boxes could be used by changing final drive ratios. sportspart number of gear kit was45-222,ratios as follows,2.54,1.64,1.22,1.00,i cant remember which diff i ran?
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Old 26 Feb 2008, 10:13 (Ref:2138253)   #9
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Originally Posted by Farbrooke
If you had a set of papers that match Old Nail that would maybe allow use of Gabriel's car today - reincarnation of 70's racers, seems to me, has yet to include much more than Grp one and half - dry sumping and 10inch / 12 inch rims are yet to be rediscovered.
Malcolm - I searched through my papers last night and found a letter from the RAC allowing front and read additions/modifications to the bodywork in 1973 and I found the proper papers for the dry sump for Group 2 use only - this is what you really wanted isn't it?
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Old 26 Feb 2008, 10:45 (Ref:2138272)   #10
Farbrooke
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Farbrooke has a lot of promise if they can keep it on the circuit!
Gregor - it could be a good start - anything on the fuel injection and wheel widths? - did you find any actual homologation papers or record of it running in a group 2 or 5 race? - we have letters from WB showing front spoiler and rear deflector fitted Old Nail April 73 after running car in March for first time with the twink head.
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Old 26 Feb 2008, 11:12 (Ref:2138295)   #11
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Originally Posted by Farbrooke
Gregor - it could be a good start - anything on the fuel injection and wheel widths? - did you find any actual homologation papers or record of it running in a group 2 or 5 race? - we have letters from WB showing front spoiler and rear deflector fitted Old Nail April 73 after running car in March for first time with the twink head.
I'll scan it when I get home and e-mail it you and it is proper papers. Nothing on fuel injection or wheel widths, will keep looking though. I don't think Old Nail did any Group races with Dad (Bill Dryden used her in Scotland for a few races but not sure what championship, it's noted as "Scottish Saloon Championship") and her last competitive race with Dad racing her was May 1975. Looks like the letter from Bill is the same as the one I have.

All of Bill's technical papers are with the DSG, so if there is anything they will have it; have you got the twins details?
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Old 26 Feb 2008, 11:20 (Ref:2138300)   #12
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Also (probably doesn't help though!!), Baby Bertha did some Group 2/5 races in Denmark in August 1977.
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Old 26 Feb 2008, 12:14 (Ref:2138334)   #13
Farbrooke
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have you got the twins details?[/quote]

No - could you please include with the scan - many thanks

Think baby Bertha is another story
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Old 19 Sep 2008, 09:45 (Ref:2293635)   #14
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Quote:
Originally Posted by Farbrooke
Hi Gregor
Papers 5565 - April 72 - main papers are GRP 1 - Twin Zenith 175CD
but you don't want those
Extension 9/6V - valid in Grp 1 from 1st April 1975
Twin Delorto DHLA 48's - known as kit 25177 - including manifolds and airbox in photo - also a proper 4 speed ZF box
All sorts of GRP 2 goodies in other extensions as well including Old Nail style bodywork but no more carb variations
A friend of mine has asked me when ventilated front discs were homologated (probably for Group 2) for the Firenza/Magnum and I just happened to see this thread today. He is hoping that this was before 1/1/75. Any information would be gratefully received.
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Old 19 Sep 2008, 10:27 (Ref:2293646)   #15
Farbrooke
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Originally Posted by frisby
A friend of mine has asked me when ventilated front discs were homologated (probably for Group 2) for the Firenza/Magnum and I just happened to see this thread today. He is hoping that this was before 1/1/75. Any information would be gratefully received.
papers 5565 - amendment 10/7V - valid 1/4/75 - Grp 2 only - 21 x 257 vented disc.
Main 5565 papers show 255 x 9.6mm disc

5565 Only papers I have copies- other papers are
5443 - 1/1/72 - Grp 1 with two amendments
5476 - 1/7/72 - Grp1 with 4 amendments
5564 - 1/4/74 - Grp 1 with 1 amendment

May be some in these?
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Old 19 Sep 2008, 10:38 (Ref:2293649)   #16
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Thank you
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Old 19 Sep 2008, 10:43 (Ref:2293651)   #17
GBRM
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If you need copies of the other papers mentioned above I think I have them at home as I was sent copies of all Magnum/Firenza papers a few months ago. Let me know.
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