Engine and Transmission Tech
tips, technology, tools and techniques related to vehicle driveline components
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MGBV8 Carl Floyd Kingsport, TN (4512 posts) Registered: 10/23/2007 11:32PM Main British Car: 1979 MGB Buick 215 |
Re: Laser Cut Header Flanges for Buick/Rover Aluminum V8s
Quote: I feel another song coming on.... I'll be real surprised if there is any issues between the Rover, Buick 215, & likely the Buick 300. I do know that Mike Moor reused his 215 block hugger headers on his 300. The Olds, well, that one is a bit of its own animal. Gary, I have an old 3 row Rover head that you are welcome to borrow. I have some late model Rover heads that I was planning to swap sometime this winter, so you might can also borrow a '63 215 head at some point. Better yet, Curtis can send you one of his old Buick heads since he has already swapped them out & I'll send you a Rover head. You can just return them in Omaha. Some head comparisons: [www.roversd1.nl] |
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Moderator Curtis Jacobson Portland Oregon (4577 posts) Registered: 10/12/2007 02:16AM Main British Car: 71 MGBGT, Buick 215 |
Re: Laser Cut Header Flanges for Buick/Rover Aluminum V8s
Gary, I think a bigger problem might be scope creep. These flanges fit Buick 215 and Rover. Now you're getting advice about Buick 300, Olds, TA, and even reworked Ford 1-5/8" headers - plus a few opinions about aesthetic issues. With all due respect to everyone, IMHO, you should sell a few sets and listen carefully to feedback from actual customers.
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BlownMGB-V8 Jim Blackwood 9406 Gunpowder Rd., Florence, KY 41042 (6469 posts) Registered: 10/23/2007 12:59PM Main British Car: 1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS |
Re: Laser Cut Header Flanges for Buick/Rover Aluminum V8s
Since you have the pattern that makes real good sense. Digital files are not that hard to change. You might even consider a connector strap delete version with a dotted line type cut at the flanges for easy removal by the builder which theoretically should please just about everyone.
Jim |
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Beau Dirt Beau Dirt Minneapolis, MN (35 posts) Registered: 05/02/2012 03:23AM Main British Car: 1973 Morris Mini, 1930 ford Model T, 1926 Model T 1 liter Suzuki and Four 215's |
Re: Laser Cut Header Flanges for Buick/Rover Aluminum V8s
Headers By Ed here locally sells the 215 flanges already, but they are $150, and over $300 with the starter pipes.
The Olds and Buick are different. Dang. EDIT- The Buick flanges are a bit cheaper for plain- $146 $315 as shown below. 
I'd see these look better than Ed's, at a MUCH better value. Using the webbing during the build of the headers would sure make it easier to maintain a flat plain. Cut em out when you're done if you don't like them. For $50 it's a steal! If they will physically bolt up to the Olds heads (without the webbing) I still want two sets. Edited 4 time(s). Last edit at 11/29/2012 08:01PM by Beau Dirt. |
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ex-tyke Graham Creswick Chatham, Ontario, Canada (1165 posts) Registered: 10/25/2007 11:17AM Main British Car: 1976 MGB Ford 302 |
Re: Laser Cut Header Flanges for Buick/Rover Aluminum V8s
Quote: Eliminating the connecting straps/webbing opens up the probability of developing stress cracks and failure of the primary pipe to flange joint - early BOP/Rover block huggers did not have the flange connectors and had lousy life until the webbing was added. |
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Moderator Curtis Jacobson Portland Oregon (4577 posts) Registered: 10/12/2007 02:16AM Main British Car: 71 MGBGT, Buick 215 |
Re: Laser Cut Header Flanges for Buick/Rover Aluminum V8s
A good point, but slip joints at the collector are another way to eliminate the issue.
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Beau Dirt Beau Dirt Minneapolis, MN (35 posts) Registered: 05/02/2012 03:23AM Main British Car: 1973 Morris Mini, 1930 ford Model T, 1926 Model T 1 liter Suzuki and Four 215's |
Re: Laser Cut Header Flanges for Buick/Rover Aluminum V8s
ex-tyke- Thanks. I was wondering about that.
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BlownMGB-V8 Jim Blackwood 9406 Gunpowder Rd., Florence, KY 41042 (6469 posts) Registered: 10/23/2007 12:59PM Main British Car: 1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS |
Re: Laser Cut Header Flanges for Buick/Rover Aluminum V8s
Not such a problem with full length headers but I'm probably the only MGB owner running those. I can see it being a problem with the shorties.
Man, that last shot are some sorry looking flanges. The ones they sold me 25 years ago looked much better. Odd. I paid less for them too, probably something like $60-80 with the stubs. But you know, if you have a bench vise, angle grinder, and acetylene torch it is very easy to flare the tubes out to match the flanges. I did that with schedule 40 pipe when I built my turbo headers for the 215. Just make a tapered plug and heat-n-beat to fit. Simple. Jim |
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Re: Laser Cut Header Flanges for Buick/Rover Aluminum V8s
Jim I think the part cut line would be ideal but I am trying to abosrb everthing people are writing. It's not about me so I am trying to abosrb what eveyone is sayng.
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mgb260 Jim Nichols Sequim,WA (2463 posts) Registered: 02/29/2008 08:29PM Main British Car: 1973 MGB roadster 260 Ford V8 |
Re: Laser Cut Header Flanges for Buick/Rover Aluminum V8s
Gary, Your flanges look much better than "ED's". I plan on making my own for the Caddy 4.9 but using 1 5/8" round stub instead of port shape. What are the length and width of the ports in yours? Could be another option.
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mgb260 Jim Nichols Sequim,WA (2463 posts) Registered: 02/29/2008 08:29PM Main British Car: 1973 MGB roadster 260 Ford V8 |
Re: Laser Cut Header Flanges for Buick/Rover Aluminum V8s
Gary, Thanks. Looks like a 1.625 OD round port would work fine. Flange would have to be wider. I think that is what Roverman had in mind. My port size is .875 x1.25. I will use 1.5 ID /1.625 OD stubs so 1.625 ID tubes will slip over.
Edited 3 time(s). Last edit at 11/30/2012 08:11PM by mgb260. |
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roverman Art Gertz Winchester, CA. (3188 posts) Registered: 04/24/2009 11:02AM Main British Car: 74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L |
Re: Laser Cut Header Flanges for Buick/Rover Aluminum V8s
Clan, I would gladly test fit a template, to a TA head. It is likely that only non-ported TA heads would use a 1 5/8" primary pipe. Ported ones would require a mimimum of 1 3/4" od. This is known as "scope creep". Cheers, roverman.
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MGBV8 Carl Floyd Kingsport, TN (4512 posts) Registered: 10/23/2007 11:32PM Main British Car: 1979 MGB Buick 215 |
Re: Laser Cut Header Flanges for Buick/Rover Aluminum V8s
Takes a lot of power to justify those 1 3/4" primaries, Art. What is your target, 500hp? My Camaro was putting very close to 400 RWHP. Primaries were 1 5/8. Mostly street driven, though.
[www.stockcarracing.com] |
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roverman Art Gertz Winchester, CA. (3188 posts) Registered: 04/24/2009 11:02AM Main British Car: 74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L |
Re: Laser Cut Header Flanges for Buick/Rover Aluminum V8s
Carl and clan, It would only be a WAG., at this point. Mike at TA and TRS claim 600 hp./all motor, but No dyno sheets ! I might become a believer, when I see one ?? My TA motor will need to max power at 7,500 +. In "Vizards" example, sbc was using a dual plane, no 5/7 swap and is street bound. Onward, roverman.
Edited 1 time(s). Last edit at 12/01/2012 06:23PM by roverman. |
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MGBV8 Carl Floyd Kingsport, TN (4512 posts) Registered: 10/23/2007 11:32PM Main British Car: 1979 MGB Buick 215 |
Re: Laser Cut Header Flanges for Buick/Rover Aluminum V8s
Wow. That much power & RPM I guess you can make good use of the bigger primaries.
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BlownMGB-V8 Jim Blackwood 9406 Gunpowder Rd., Florence, KY 41042 (6469 posts) Registered: 10/23/2007 12:59PM Main British Car: 1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS |
Re: Laser Cut Header Flanges for Buick/Rover Aluminum V8s
So I'm guessing for that you would need to level out the line across the top a bit so the port could be raised?
Jim |
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roverman Art Gertz Winchester, CA. (3188 posts) Registered: 04/24/2009 11:02AM Main British Car: 74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L |
Re: Laser Cut Header Flanges for Buick/Rover Aluminum V8s
I'm honestly not trying for scope creep here. Big primaries could/should be in their own category, including perhaps aluminum port adpters, like some race motors use. TA heads "might" benefit from an upswept primary, say 5 deg., which works well on Stage II V6 heads. Onward, roverman.
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Beau Dirt Beau Dirt Minneapolis, MN (35 posts) Registered: 05/02/2012 03:23AM Main British Car: 1973 Morris Mini, 1930 ford Model T, 1926 Model T 1 liter Suzuki and Four 215's |
Re: Laser Cut Header Flanges for Buick/Rover Aluminum V8s
I reveived my set the other day. I'm super excited.
They'll go on to the Olds 215 heads. My flanges where maybe a bit too exact. I'll need just a bit of work with the rat tail to get them to fit over the studs. It looks like my flanges have a bit different profile. I'll report back with what I find once I get them on. As mentioned, they won't clear the bottom row of bolts, or my dipstick (I think the dipstick is in a different spot on the Buicks???). But on my application pulling the headers off won't be tough. :) Thanks again!  |
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