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 1Likes
03-25-2009, 01:58 PM
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Banned
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Join Date: Oct 2003
Location: Yorba Linda,
CA
Cobra Make, Engine: SPF w/392CI stroker
Posts: 3,293
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Not Ranked
Bumper Jack orientation (bolts)
I'm a stickler for details...It's my nature. 
I'd like to know what was correct on most of the original Cobras (emphasizing the word most because teams back in the day did different things with these cars)? What I mean by "correct" is not whether they were mounted forward (out) or backward (inward), but more so the orientation of the bolts.
SPF and others have the bolts on the inside of the flange, so they are NOT exposed when viewed from the side. I have seen ERAs and some CSX cars with these bolts on the outside of the flange, thus they are exposed when viewed from the side.
Below is my SPF for example purposes. I can also see where this slight orientation can have an ever-so-slight change to the overall look. Again, a really minor detail for most but I'm just curious and want the real answer.
I did a search under bumper jacks and that didn't turn up much (to my surprise...thought I had read this here at one time or another). 
Thanks,
-Dean
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03-25-2009, 02:27 PM
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Senior Club Cobra Member
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Join Date: Mar 2001
Location: Northport,
NY
Cobra Make, Engine: Kirkham, KMP178 / '66 GT350H, 4-speed
Posts: 10,362
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Not Ranked
Simple answer, Dean.
A correct orientation = nuts, outward
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03-25-2009, 02:33 PM
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Senior Club Cobra Member
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Join Date: Oct 2006
Location: Santa Cruz,
CA
Cobra Make, Engine: SPF 2613 Titanium w/Black, Roush 402SR
Posts: 4,098
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Not Ranked
Hey Dean,
Not sure if you saw this thread. Did you get your engine all buttoned back up with the new oil pan?
http://clubcobra.com/forums/showthre...ighlight=jacks
__________________
Doug
No stop signs, speed limit - Nobody's gonna slow me down - Like a wheel, gonna spin it
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03-25-2009, 03:36 PM
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Banned
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Join Date: Oct 2003
Location: Yorba Linda,
CA
Cobra Make, Engine: SPF w/392CI stroker
Posts: 3,293
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Not Ranked
Thanks, Doug. That link really settles the debate...it's up to the user. 
I got the pan back from the powder coater on Monday and just haven't had the time to get it back on. Should have a moment to get to it this weekend. It looks great and the battle scars (welds) on the bottom add some character. Thanks for asking.
-Dean |
03-25-2009, 03:40 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
Quote:
Originally Posted by RedBarchetta
SPF and others have the bolts on the inside of the flange, so they are NOT exposed when viewed from the side. I have seen ERAs and some CSX cars with these bolts on the outside of the flange, thus they are exposed when viewed from the side.
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Generally speaking, if you have ERA and CSX cars doing it one way, and SPF and others doing it the opposite way, I'll put my money on ERA and CSX every time.  |
03-25-2009, 04:02 PM
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CC Member
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Join Date: Feb 2008
Location: Jacksonville,
FL
Cobra Make, Engine: Kirkham #570 w Shelby FE
Posts: 1,009
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Not Ranked
On the 427 cars the rods are staggered in the front, so the jacks can only go on one way.
The 289 cars have the rods straight (vertically) so they can be flipped either way.
Of course you may decide, like me, that you've scraped skin off your leg for the last time and are replacing them with overiders.  (it was either that or tying pillows on the darn things)
I haven't had the pleasure of laying my forehead open on one yet like some folks. |
03-25-2009, 04:19 PM
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Banned
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Join Date: Oct 2003
Location: Yorba Linda,
CA
Cobra Make, Engine: SPF w/392CI stroker
Posts: 3,293
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Not Ranked
Quote:
Originally Posted by Ronbo
I haven't had the pleasure of laying my forehead open on one yet like some folks.
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Urghhh, that would include me. Four stitches directly in the eye brow. Went well with the blood red paint finish, too. |
03-25-2009, 04:40 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
Quote:
Originally Posted by RedBarchetta
Urghhh, that would include me. Four stitches directly in the eye brow. Went well with the blood red paint finish, too. |
Think nothing of it -- real men have scars. |
03-25-2009, 05:38 PM
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CC Member
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Join Date: Nov 2008
Cobra Make, Engine: SPF MKIII, Roush 427RRRR
Posts: 29
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Not Ranked
Chicks dig scars 
__________________
"If you can leave two black stripes from the exit of one corner to the braking zone of the next, you finally have enough horsepower". Mark Donohue
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03-30-2009, 07:53 AM
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Banned
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Join Date: Oct 2003
Location: Yorba Linda,
CA
Cobra Make, Engine: SPF w/392CI stroker
Posts: 3,293
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Not Ranked
Pardon the low res cell phone pics.
NUTS IN:
NUTS OUT:
NUTS IN (3/4) - older high res pic:
NUTS OUT (3/4):
NUT OUT (Front view):
Left them nuts out and used a level to get them true vert. My perception is that it makes the car/hips look wider. Votes? Opinions?
-Dean
Last edited by RedBarchetta; 03-30-2009 at 07:55 AM..
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03-30-2009, 08:01 AM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
Hmmm, can you guess which configuration I vote for?
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03-30-2009, 09:31 AM
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Senior Club Cobra Member
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Join Date: Oct 2006
Location: Santa Cruz,
CA
Cobra Make, Engine: SPF 2613 Titanium w/Black, Roush 402SR
Posts: 4,098
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Not Ranked
Quote:
Originally Posted by RedBarchetta
Pardon the low res cell phone pics.
NUTS IN:
NUTS OUT:
NUTS IN (3/4) - older high res pic:
NUTS OUT (3/4):
NUT OUT (Front view):
Left them nuts out and used a level to get them true vert. My perception is that it makes the car/hips look wider. Votes? Opinions?
-Dean |
How about nuts in on the back and nuts out on the front and then see how long it takes someone to notice the difference.
I don't know, I like the nuts turned in. Just seems to have better balance.
__________________
Doug
No stop signs, speed limit - Nobody's gonna slow me down - Like a wheel, gonna spin it
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03-31-2009, 09:24 AM
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Evryday is a roadstr day
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Join Date: Jan 2004
Location: North Jakarta, Indonesia,
Oh
Cobra Make, Engine: RHD Hurricane street roadster HM1081 aging nicely in the garage
Posts: 5,725
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Not Ranked
To add a bit of spice to the mix, check out the jacks on the #98 car shown on page 59 of Friedman's book, "Cobra". Car is shown up on the quick jack and you can see all four nuts from one view, some of the shapes you can get are a bit off. In addition, they are tucked right in close to the body, front and rear, no ugly post to look at...seems some those extended posts folks put on their cars aren't competition correct...so if some one wants to be period correct..time to go back to Friedman's book (and computerworks gallery) and look at the real racing pictures.
__________________
 aka Fuzzy ............... "It is not the return ON my investment that I am concerned about; it is the return OF my investment"....  ...from Will Rogers
Last edited by fastraxsg; 03-31-2009 at 09:31 AM..
Reason: usual speeling and punktuaashun missteaks
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03-31-2009, 09:42 AM
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CC Member
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Join Date: Jun 2000
Location: Cape Town, South Africa/Mainz, Germany,
Posts: 1,601
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Not Ranked
It depends on the width of your bumper jack... ;-)
Dom
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If I don't respond anymore, that's because I can't log in
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04-01-2009, 04:37 PM
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Senior Club Cobra Member
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Join Date: May 2007
Location: San Clemente,
CA
Cobra Make, Engine: CSX 4758, CSX 381 Keith Craft 482 w/ Weber 48 IDA's
Posts: 492
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Not Ranked
Nuts out Dean! Very nice.
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04-01-2009, 05:18 PM
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CC Member
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Join Date: Jun 2003
Location: Freedomia,,
Il
Cobra Make, Engine: Coupe,Blue w/white stripes SB; Roadster, Blue w/white stripes BB w/2-4s; SPF installer/Hot Rod-Custom Car builder
Posts: 1,376
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Not Ranked
I will only relay what a very authorative Mr. Mcgoo, wait that was McDoo, said. According to his mythology, the 289 cars had them on the outside with the lift points inward. However, once again from his mammory, something that had to do with the lower scoop on the 427 made them have to be reversed. I won't take a stand, just repeating words from an older person than I. I have bumpers, so I didn't have to make that decision...or get the scars apparently.
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WDZ
Last edited by Woodz428; 04-01-2009 at 05:22 PM..
Reason: sticky p key
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04-02-2009, 12:18 AM
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CC Member
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Join Date: Jun 2000
Location: Cape Town, South Africa/Mainz, Germany,
Posts: 1,601
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So we conclude (this is 1965):
If you use the bumper jack, and still have the one from last season from your 289, aim for the same spacing between the jacking points for your 427.
Does that make sense?
Are the mounting points spaced differently from 289 to 427?
Dom
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