I've been looking for a replacement front (header) exhaust pipe for my 1980 B21 engine. But have been told that they aren't available from Walker or Bosal. So I'm thinking of trying a header for a B230 engine and using an extension pipe to the front muffler. Will it work?
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1980 245 Canadian B21A with SU carb, M46 trans, 3:31 dif, in Brampton, Ont.

Why not a B230 exhaust manifold on a 1980 B21 as well as the B230 header.

Well, if the exhaust gaskets are crumbly at the edges by finger nail that may warrant replacement before failure. Though Kroil, time, tap-tap-tap, maybe heat, to get them old studs out and use new OEM studs and gaskets?

The B230 manifold is more efficient, yes?

Well, you may have the PulseAIR or at least EGR with the wax EGR thermostat on the B21 head in Canada?

Just an idea-r.

May want to try the facebook Volvo 240 fan club to reach other Canadian 240 owners for guidance. The southern, lowland BC junkyards may have parts you can use, yet across the continent ...

If on facebook, login to your account, and join this group:
https://www.facebook.com/groups/Volvo240Club/

And, Volvo Part and Cars for Sale
https://www.facebook.com/groups/676640922453172/

Also, local and distant craigslist in Canada.

https://www.craigslist.org/about/sites#CA

https://geo.craigslist.org/iso/ca

And the class ads here:
https://www.brickboard.com/CLASSADS/

If they are in Canada. The Frank Ponte post in New Jersey.

Maybe there exists someone with a hoard of Volvo cars and parts in Canada someplace?
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Give your brickboard.com a big thumbs up! Way up! - Roger Ebert.

I am parting out a 1983 if you need anything let me know

I have too many parts from 240s that I've scrapped. But exhaust systems don't last. They tend to go at the welds.

If I could find the "y" tube, I'd try making my own front header.
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1980 245 Canadian B21A with SU carb, M46 trans, 3:31 dif, in Brampton, Ont.

fwiw.

don't know if you've contacted voluparts or not.
but I found the invoice for that Full Length Header...it was $80 plus $30 shipping to Maryland. It was a new and I gathered that they were glad to unload it to someone who wanted it. So $110 US that was 2 years ago


http://www.voluparts.com/

Thanks, but I'm in Canada so don't want to do the import duty, brokerage fee thing. RolandP probably has the same challenge.
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1980 245 Canadian B21A with SU carb, M46 trans, 3:31 dif, in Brampton, Ont.

I did 2 purchases in the USA about 3 and 6 years ago and both turned out to be bad experiences due to hidden brokerage and transport charge.

One was a temporary shelter cover that was replaced for free. Just transport and brokerage fee to pay. Three weeks after Fedex sent me a $75 bill.

Hard for us to import or export in the USA. Things go better unfortunately with oversea imports according to my son.

did not know that. So NAFTA is not exactly what we have been SOLD. LOL

I have re-welded pit corrosion and also a couple welds near the Y. This is on a genuine Volvo downpipe. These seem to to be heavier gage than after market ones.

I use Volvo downpipes on both of my cars. But the 1982 has stainless steel pipes for the rest of the exaust system. Very time consuming but after more than 15 years it is rewarding. I used scrapped dairy pipeline 2 inch o.d. and it is just thick enough for 1/16 inch electric rod welding at 40 amp.

About 15 years ago I put a b230 front header pipe on my b21a 1982. Direct fit.

I had to install a piece of pipe between front header pipe triangular flange and muffler. In order to get a perfect match I had to tack weld the new flange in place, and after that finish welding it on the workbench.

I should mention that the bell housing pipe support is not used since. I figured it would leave more flexibility. Never had an exaust manifold leak since.

Also,the front header pipe was stripped from its sound insulation. In our climate it only bring corrosion.

In the US, all B21s were FI and starting in 78 or 79 they had CATs, so the head pipes for the CAT equip'd ones were short and flanged to meet the CAT. US B230s all have CATs so the same applies.

You looking for a header pipe that runs all the way back to the front muffler. In the US that would be for a 78, 77, 76 B21.

I got one from that Atlanta parts place, when I dropped the CAT from my 80 B21.

http://www.voluparts.com/

the exhaust manifold between the 230 na and 21 na interchange so the header ought to as well since the uni-body is for practical purpose the same