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#2382563 - 10/05/17 03:58 PM Fun(?) with my dyno headers
BradH Offline
I Live Here

Registered: 01/30/03
Posts: 13389
Loc: Valhalla... eventually
I bought a set of used Hooker 2" Super Comp headers for dyno use, since my TTI 2" headers tuck in too far to fit Dwayne Porter's dyno and this style of Hooker headers doesn't fit a B/E-body well with raised exhaust-port heads like Stage VIs and Victors.

Sunday afternoon I spent a good bit of time cleaning them up, especially trying to get corrosion out from inside the tubes & collectors.

Monday night I grabbed an old head and wanted to make sure the headers would bolt-up OK before I really needed to use them. The driver-side header was OK. Well... actually it was a big PITA because some of the bolts wouldn't start in easily and I fought it for longer than I want to admit before I eventually got 'em all in.

The passenger-side header gave me a bit of a surprise w/ the #2 header tube that's a slip-fit (the #7 on the driver-side is also a slip-fit). When the tube was in the slip-fit joint, the flange wasn't even close to being able to be bolted to the head. And when I bolted down the flange first, the end of the #2 tube wasn't even close to fitting into the slip-fit joint. Grrr... Long story short: the old head tightened into my bench vice gave me a stable fixture, and a long piece of 2" exhaust tube gave me reasonable leverage to get things back in alignment thru a trial & error process that went fairly quickly.

Pics of the ordeal...


Attachments
Right side - before.jpg

Num 2 slip-fit_flange-bolted - before.jpg



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#2382566 - 10/05/17 04:01 PM Re: Fun(?) with dyno headers [Re: BradH]
BradH Offline
I Live Here

Registered: 01/30/03
Posts: 13389
Loc: Valhalla... eventually
What the #2 flange looked like when the tube was in the slip-fit and when the flange was bolted on where the tube wouldn't align w/ the slip-fit joint.


Attachments
Num 2 flange_slip-fit - before.jpg

Num 2 flange_w-o_slip-fit - before.jpg



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#2382569 - 10/05/17 04:03 PM Re: Fun(?) with dyno headers [Re: BradH]
BradH Offline
I Live Here

Registered: 01/30/03
Posts: 13389
Loc: Valhalla... eventually
The Handy Dandy (and incredibly cluttered) workbench with the head in the vice and the header bolted to the head. One pic shows the "tool" I used to re-align the #2 pipe.


Attachments
Head-fixture-vice.jpg

Head_fixture_pipe.jpg



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#2382570 - 10/05/17 04:04 PM Re: Fun(?) with dyno headers [Re: BradH]
BradH Offline
I Live Here

Registered: 01/30/03
Posts: 13389
Loc: Valhalla... eventually
And the end result...


Attachments
Right side - after.jpg

Num 2 flange - after.jpg

Num 2 slip-fit - after.jpg



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#2382571 - 10/05/17 04:05 PM Re: Fun(?) with dyno headers [Re: BradH]
BradH Offline
I Live Here

Registered: 01/30/03
Posts: 13389
Loc: Valhalla... eventually
And the driver-side bolted on the head, FWIW...


Attachments
Left side.jpg



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#2382908 - 10/06/17 10:00 AM Re: Fun(?) with dyno headers [Re: BradH]
ccdave Offline
top fuel

Registered: 01/22/03
Posts: 1618
Loc: Mopar Country, Mi
Nice work. wrench

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#2382919 - 10/06/17 10:23 AM Re: Fun(?) with dyno headers [Re: ccdave]
BradH Offline
I Live Here

Registered: 01/30/03
Posts: 13389
Loc: Valhalla... eventually
Thanks, although it was closer to hammer than wrench . laugh2

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#2382986 - 10/06/17 01:05 PM Re: Fun(?) with dyno headers [Re: BradH]
Cab_Burge Offline
Too Many Posts

Registered: 08/23/03
Posts: 29712
Loc: Bend,OR USA
Was the EGT bung welded into that pipe off the motor? work shruggy
_________________________
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

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#2382993 - 10/06/17 01:15 PM Re: Fun(?) with dyno headers [Re: BradH]
EV2Bird Offline
On Vacation

Registered: 06/23/14
Posts: 2951
Loc: Kansas Roads Between 0 and 140...
Such a roomy work area!

What are the pipe stock and slip joints made of? Are they compatible in the welding?

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#2382999 - 10/06/17 01:22 PM Re: Fun(?) with dyno headers [Re: EV2Bird]
bonefish Offline
master

Registered: 11/03/04
Posts: 6932
Loc: s.w.fl
is that a high dollar specialty tool or did you fabricate it yourself? up

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#2383172 - 10/06/17 08:23 PM Re: Fun(?) with dyno headers [Re: BradH]
AndyF Offline
Too Many Posts

Registered: 01/20/03
Posts: 23318
Loc: Oregon
Tell Dwayne to step up to the plate and buy some dyno headers! Schoenfield has them in a 1 7/8 to 2 inch step header that works with most bracket type Mopar big block. They used to be fairly inexpensive but I think they raised prices recently.

http://www.schoenfeldheaders.com/sprintdyno1.html

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#2383177 - 10/06/17 08:30 PM Re: Fun(?) with dyno headers [Re: BradH]
fast68plymouth Offline
I Live Here

Registered: 01/20/03
Posts: 10394
Loc: So. Burlington, Vt.
I have dyno headers, but they aren't the same size as what he'll use in the car.

Actually, I have 3 sets of bb mopar dyno headers.
_________________________
68 Plymouth Satellite, 383, stock 906's, 3550lbs, 11.18 @ 123, 1.51 60' PRH is a Comp Cams W/D......competitive pricing on entire line. Custom cams available. ** dealer for Indy Cylinder Heads **

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#2383233 - 10/06/17 10:26 PM Re: Fun(?) with dyno headers [Re: fast68plymouth]
BradH Offline
I Live Here

Registered: 01/30/03
Posts: 13389
Loc: Valhalla... eventually
The TTIs aren't equal-length primaries, but they average right about 32", which is what Hooker advertises the primaries length of the 5209 Super Comps. Both are 2" tubes with 3.5" collector diameters and the effective collector lengths without bolt-on extensions are very close, too.

Neither is an "ideal" design, but the last dyno results using another set of the same model Hookers correlated well to the in-car results with the TTIs. I believe the Hookers are a good alternative for dyno testing when the TTIs don't fit the dyno setup.

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