Post headers fitted to a Pre

[Gsxxx600]

Ive read that post headers will fit on a pre engine, only that the oil pan causes interference.

If one was to modify the headers/bolt on post oil pan to pre engine, would you be able to get a slipon for a 98s and up then?

Or would it be too long/too short? Im sure u would need to fab up some brackets for the passenger too

thanks

[The CyberPoet]

From what I understand, if you use the 98+ headers, you have two choices:
(A) also use the 98+ oil pan OR
(B) dent the pipes some at the lower turn.

Since I've never had a pre-98 Kat, I'm taking this from others who have said this...

Cheers
=-= The CyberPoet

[Waltari]

The headers will fit with the mods that you and cyber mentioned but the stock slipon will be too long. The actually mounting hole for the exhaust can sits about 2" too far back. If you use an aftermarket can that has a moveable hanger this shouldn't be a problem. You could also just span the 2" difference with a small piece of metal.

[Gsxxx600]

hmm thanks,

I think that mod might be the cheapest in the long run

[Waltari]

Hey, I've got 98+ kat750 header on mine

[loudnlow7484]

I actually have a 98+ exhaust headed to me to try and fit on my 90 750. I was wondering, though.... does this all only apply to the 600's? My oil pan has a deep V-shaped sump, and I don't remember the 600's being like that. Can I still fit a post 98 full exhaust (stock) on my bike by denting the collector, or is this going to be a -dremel & welder- kind of operation? I just want my bike to be quiet, but I don't like the dual exhaust look.

[Gsxxx600]

waltari, the 750 bolts up to a 600 engine?

[Waltari]

waltari, the 750 bolts up to a 600 engine?

Yes with the slight modifications Cyberpoet suggested in his post above. The 750 header also has slightly larger diameter downtubes and allows the exhaust to breath a bit more.

[The CyberPoet]

waltari, the 750 bolts up to a 600 engine?

Yes with the slight modifications Cyberpoet suggested in his post above. The 750 header also has slightly larger diameter downtubes and allows the exhaust to breath a bit more.

The header pipe diameter gives it a 23% larger cross-sectional area between the 600 & 750. At the collector, it all seems to draw down to the same size (no difference in the collector-to-midpipe size nor the gasket size/part number for that interface).

At the very tail end, the differences are:
98+ 600 OEM Can exhaust pipe - 1.13" (+/- .025")
98+ 750 OEM Can exhaust pipe - 1.25" (+/- .025")

Cheers
=-= The CyberPoet

[Gsxxx600]

can you be a little more exact on the size of the exhaust pipe cyber?

that +/-.025 can make all the difference!

just kidding lol

[The CyberPoet]

can you be a little more exact on the size of the exhaust pipe cyber?

that +/-.025 can make all the difference!

just kidding lol

That was the difference between the smallest measurement taken across the inside and the largest as I went around the circle... Would you rather have it in angstroms?

Cheers
=-= The CyberPoet