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09-26-2015, 01:11 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,415
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Not Ranked
Looking for homologation info for '64-'65 FIA 289 Cobra...
Doing an engine build for a UK customer, running a Kirkham 289 Cobra in FIA road racing class. Anyone have any papers handy? Need some engine rules...
Intake options?
Compression ratio?
Camshaft rules?
Anything about rocker arms?
Amount of overbore allowed?
Valve size limits?
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09-26-2015, 01:37 PM
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Club Cobra Member
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Join Date: Mar 2002
Location: arroyo grande, ca,
ca
Cobra Make, Engine: NAF 427
Posts: 1,774
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Not Ranked
Hi blykins: Homologation papers have often been on e-bay. PM me if you can't find them.
Cheers
Greg
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09-26-2015, 01:39 PM
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Senior CC Premier Member
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Join Date: Nov 2004
Location: SoCal,
CA
Cobra Make, Engine: CSX #4xxx with CSX 482; David Kee Toploader
Posts: 3,574
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Not Ranked
Check with Vernon Estes (The Turd here). He seems to always come up with lots of the old homologation stuff.
He's on Ebay too..
__________________
All that's stopping you now Son, is blind-raging fear.......
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09-26-2015, 01:42 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,415
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Not Ranked
Greg, do you have them?
I ordered a set from ebay (from Vernon I think) but was wanting to do some planning before they get here.
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09-26-2015, 03:00 PM
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Club Cobra Member
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Join Date: Mar 2002
Location: arroyo grande, ca,
ca
Cobra Make, Engine: NAF 427
Posts: 1,774
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Not Ranked
Hi blykins. Sorry, I've got the 427 papers so I can't help you with 289 info.
Cheers
Greg
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09-26-2015, 03:02 PM
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Club Cobra Member
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Join Date: Mar 2002
Location: arroyo grande, ca,
ca
Cobra Make, Engine: NAF 427
Posts: 1,774
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Not Ranked
Just a thought. Would the Registry have the info you're looking for?
Cheers
Greg
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09-27-2015, 04:00 AM
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CC Member
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Join Date: Feb 2006
Location: Gore. New Zealand.,
SI
Cobra Make, Engine: DIY Coupe, F/T ,MkIV.
Posts: 808
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Not Ranked
Not 100% sure on this but believe regs/rules are very tight, I think the FIA approval # your looking for in this case is 115, I would strongly suggest that you have your client obtain & forward the FIA stuff to you if you intend to abide by those rules, my thoughts on your questions below from stuff I have read in relation to Daytona Coupe, it may not apply to 289 Cobra.
Quote:
Originally Posted by blykins
Doing an engine build for a UK customer, running a Kirkham 289 Cobra in FIA road racing class. Anyone have any papers handy? Need some engine rules...
Intake options?48 IDA's
Compression ratio?As high as you can obtain with flat top pistons & 289 Hi Po type heads
Camshaft rules?Flat Tappet & I think the old 'C7-- Le Mans Cam
Anything about rocker arms?The old ball & stud used by HP 289 etc- 1.6/1 rocker ratio
Amount of overbore allowed? Service sizes for 289 at time- presumably 4.030"
Valve size limits?IIRC 1.56 ex & 1.875" inlet.
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IIRC block had to be 289 2 bolt, the later GT40 is allowed a pre production version similar to the Boss302 block.
I could be wrong as to the requirements for the series your customer intends to compete in though, get the rules in hard print before starting.
__________________
Jac Mac
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09-27-2015, 05:46 AM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,415
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Not Ranked
Thanks Jac, that's a big help.
I do have papers on the way and I will ask my guy which series he wants to run. I'll have to do some research on that as well, I didn't know there were multiple series.
my427cobra, I did register on the SAAC forum. Haven't got a reply yet.
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09-27-2015, 09:09 AM
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CC Member
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Join Date: Oct 2004
Cobra Make, Engine: CSX2321
Posts: 1,368
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Not Ranked
Quote:
Originally Posted by blykins
Doing an engine build for a UK customer, running a Kirkham 289 Cobra in FIA road racing class. Anyone have any papers handy? Need some engine rules...
Intake options?
Compression ratio?
Camshaft rules?
Anything about rocker arms?
Amount of overbore allowed?
Valve size limits?
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Everything should be listed here.
Regulations | Federation Internationale de l'Automobile |
09-27-2015, 10:19 AM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,415
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Not Ranked
I must not be smart enough to use that website LOL I can't find anything on it....
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09-27-2015, 03:08 PM
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CC Member
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Join Date: Feb 2006
Location: Gore. New Zealand.,
SI
Cobra Make, Engine: DIY Coupe, F/T ,MkIV.
Posts: 808
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Not Ranked
more leads
Some of the links on this thread might help..sorry if someones already posted it.
FIA Homologation Papers
__________________
Jac Mac
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