6 replies to this topic

[ChrisLC]

Has anyone had a XU-1 style muffler modified with larger inlets and outlets. Say 2.25" in, 2" out, but same body size as original? I don't need to worry about the muffler looking original, but I would prefer the thing to look similar. Or should I just get my 2.25 exhaust turned down to 2" and stick with a XU-1 repo? Some time ago, somebody mentioned that he thought these mufflers were restrictive. Are they really? Alternatives are only 14" long.

 

 

[grumpy xu1]

Chris, the style of the muffler is going to be restrictive to an extent, but how tuff is the engine, if you where really concerned about restriction, you'd probably go for a Hooker aerochamber muffler. I wouldn't say they're super quiet though. Xu1 muffler should be fine i reckon. Gary

[ChrisLC]

Chris, the style of the muffler is going to be restrictive to an extent, but how tuff is the engine, if you where really concerned about restriction, you'd probably go for a Hooker aerochamber muffler. I wouldn't say they're super quiet though. Xu1 muffler should be fine i reckon. Gary

The engine has had a bit of work. 202 Blue block, triple 1.75 CD's, CT 35 640A-107 solid cam, 1.6 rockers, so 0.52" lift. Happy to stay with a XU1 muffler, just wondering about alternatives with twin tips. Thanks Gary. I will look into the Hooker.

[grumpy xu1]

I think it's only the hooker max flow, that has 2 tips, quite different from xu1 though.

[red6]

I'm doing this in the near future also - Magnaflow looks like a good option!

 

http://www.gmh-toran...tractors/page-3

20160601_145846.jpeg


Hm9c's are fitted. Exhaust shop want to have words with hm in a dark alley somewhere and apart from costing me a kidney to have it all fitted up its all good. They modded the headers in a few spots to clear so the car didnt have to be cut/shut at all. They have done a nice job and very happy what they did with the muffler aswell. Has definitely picked up some torque and horsepowers

[ChrisLC]

I'm doing this in the near future also - Magnaflow looks like a good option!

 

http://www.gmh-toran...tractors/page-3

This one looks great but can't find it locally.  http://www.dieselops...ual-out-20-long

[grumpy xu1]

You could try, tuff car parts or engine master Australia.