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Discussion Starter · #1 ·
I have done a fair amount of searching for information on the Sprint Manifold, but still have a few questions. (FYI, I am planning on a mostly street car, with a healthy wallop... including overbore, flat pistons, 430/268 or 284 cam, a bigger weber, and others to bring everything in line)

-What applications did this manifold appear on so that I can focus my search efforts.

-is the 2.4 manifold a better choice (or even possible choice) for the 1.9

-what is the most rewarding environment for the sprint manifold

-are there any posts, documents, pics, dreams that I have overlooked in my searches

- any ballpark on price and availability

as always, any insight is appreciated.
 

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I learned what I did about Sprint exhaust manifolds from Otto on the ClassicOpel site. There are some Sprint photos in the file section.

Suppose to be better than most cheap headers out there. Pretty hard to find due to their desirability. It's just about a bolt on application for a 1.9L engine. The Sprint will need one boss removed to fit. While I was there I removed the webs like Otto did. Less radiated heat under the hood, less weight, and higher exhaust temps for better exhaust gas exit velocity.

Mine I found in the classified section on this website. I tried OGTS but they didn't have any, and when they do they go fast. Good luck hunting. I'm sure there are others here that can share a lot more on the topic.
 

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1450 Seeker...
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Discussion Starter · #3 ·
Thanks jimsky, is that jet-coated, looks good, how does the paint hold up in the heat?

Does anyone have any pics comparing the "Sprint Manifold" with the '75 FI manifold. I have heard they are pretty much the same. Are they exactly the same?

Thanks
 

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same, same

They are the same. I have both as well as their respective intake manifolds and I honestly can't tell them apart in any way. That should make them a *bit* easier to find.
 

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Opeler
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Being the proud owner of two 79-72 style exhaust manifolds, I did some hacking and welding to one to come up with this. It was actually quite easy. A bandsaw with a metal blade hacked off the intake stove in about a minute, another minute on a disc sander with a 60 grit wheel got it nice and smooth. Afte rthat it was easy to cout out and bend a cover from 3/16 steel. A few minutes on a friend's TIG welder (with him at the controls) and the steel is bonded to the cast. I only got some minor warping on the mating surface which a belt sander quickly fixed.

I am undecided on whether to remove the webs. Will it really help reduce heat? It is unpainted yet. What kind of paint will sustain exhaust manifold temps?
 

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I painted my modified Sprint with a rattle can, Dupli-Color "High Heat - Ceramic" said it was rated to 1200 degrees. Lets just say the manifold looked it's best in that photo. After a short while of running the paint turned. It's now a dull, flat, spotted brown color. The paint is still there, just doesn't look like the photo anymore. I think I once saw some black 1500 degree paint in a rattle can somewhere on line. By the way, what's "jet coated"?
 

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Discussion Starter · #8 ·
Jimsky,

I mis-spoke in my previous message, I was thinking of Jet-Hot not Jet-Coat. I also thought that Jet-Hot was available in colors, and it is, as long that color is black or silver. Sorry about that.

regardless, my father has good luck with it on some of his customer's cars.

here is the URL for reference. http://www.jet-hot.com/

p.s. I have yet to hear of an coating that is infinitely impervious to the high-temps of a exhaust system. Even stainless eventually rainbows out and then rusts.

Does anyone else have any suggestions for a manifold/header paint or coating?

FTL,

Thanks for the pics, looks very good, and certainly a viable option if the search for a sprint continues to come up dry.
 

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John (aka "ftl", a fellow Calgarian, and fellow native Winnipeger. Too small a world!),

Neat "Sprint" reproduction. Did your friend in Winnipeg do the TIG welding for you? Did you bring the 2.4 CIH conversion back with you? Do you have PHOTOS?
 

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Discussion Starter · #10 ·
more info on Jet-Hot, originally posted many months ago, but still valuable

Chris_1970GT said:
Hey guys, I just received some pricing information from Jet-Hot Coatings and thought I'd share it here in case anyone else might be interested in their services.

Here is the info I received via email:

It would run $165 to coat your header inside & out with our Sterling finish.
The 2.5" pipe would be done for $12 per foot. Mufflers are typically $70.
That price includes all necessary cleaning as well, unless they are chrome
or nickel plated. We'll need them here for about 5 days plus shipping time.
Return shipping would be $22-39.

I will send you our full information package to get you all the coating
benefits in greater detail. It will not turn colors like chrome or
stainless. Also it lowers under-hood temperatures by 40 degrees, keeps the
pipes 25% cooler and gets you 1-3% extra horsepower. Of course, it's highly
rust resistant as well - 140x better than paint. Because of that we expect
it to increase part life be 10x or more.

All parts receive a 3 year unlimited guarantee that covers chipping,
peeling, cracking, discoloration, rusting - anything. New parts also get a
lifetime rust through warranty as well.

Please ship your parts to:

Jet Hot Coatings
5602 Orchard Rd
Pascagoula MS 39581

Just be sure to include your name and return info so we know who they belong
to and specify the finish of your choice. As for billing, you can either
include a credit card number with the parts or you can call one in to the
phone number listed below.

Thanks

Todd Beiswenger
800-432-3379 x112


It was actually MUCH more reasonable than I expected. :D
 

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thread size?

What is the correct thread size on the sprint exhaust manifold? The one I have has some rust and funk, and I want to run a tap down through them before assembly. I tried looking it up in the fastener sections and no luck for me. rather do it right than foul it up worse.
 

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Detritus Maximus
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8mmx1.25 (personally, I install studs and use brass nuts instead of the bolts). Makes it easier to bolt up the head pipe, too. And no more broken bolts. Just don't over torque the nuts and strip them.
 

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thanks a ton. that sounds like an awesome idea as well. I have a real thorough selection of taps and dies, but hardly any metric ones surprisingly. I wanna just buy the ones I need.
 

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When I fixed my exhaust manifold, which had several stripped bolt holes, I ground the flange face flat and also re-faced the matching flange on the exhaust down-pipe. I could never understand why I had so much trouble keeping the gasket sealing, but it turned out the flange faces were QUITE warped. I also matched the down-pipe and manifold flange holes to the gasket, as there was a substantial interference at both ends. On the manifold, I removed almost 1/4 inch on one outlet and tapered it back up the manifold to improve the flow

Instead of studs (which is a good idea), I drilled out the old manifold threads and tapped the holes and installed stainless steel heli-coils. The I used a LIBERAL amount of high-temp copper anti-seize on the bolts, and have figured out that by leaving the two bolts that line up to the slotted holes in the down-pipe it is much easier to assemble. But studs and copper nuts or even copper bolts are an even better idea.
 

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exaust manafold

You might consider having the manifold ceramic coated. A couple of friends have had there motorcycle exaust pipes coated.
It looks good and seems to hold up. I don't know the cost though.
Good luck. The modified standard manifold looks like a real do-able option. Thanks for the pictures.
Rick
 

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4ZUA787
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so which year mainifold do u use to make a custom sprint exhaust maiifold for a 1.9l in a gt i have the tools to do it jus need to no what year maiifold to get and if there is any were i could get one for cheap?????thanx for any info u can provide me with..
 

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pvcar;
The sprint manifold, at least in the US, was only on the 75 F.I. Opels (Manta, Sportwagon, and Sedan)
 
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