W exhaust port spacing

[Captain Chaos]

What is the spacing of the exhaust ports on 750/1100W engines?

 

[Jaydee]

Same as oil cooled. I've used gsxr 1100 93-98 downpipes (solid, as in welded to collector) on slingshots a few times. Port spacing is identical. They hang a little odd, looking from the side though.

[Captain Chaos]

Ah ok... so the Remus 4-2-1 I have here is not for a watercooled Gixxaaah then.

Wonder what it's for though, supposedly came off an oilcooled 1100 engine in watercooled 750 frame but does not fit on my powerscreen engine.

[Jaydee]

Any pics? A mate of mine had a slingshot with a full Remus system. It was a while back so can't remember if it was 4/1 or 4/2/1. Downpipes were very skinny, but it looked to be baffled just before it meets the can. Not the most elegant system I've every seen but look to be good quality.

[Duckndive]

Given the Inlet Ports are on different Centres it would make sense that the exhaust ports are as well....

But most aftermarket "not welded into the collector!" systems will fit either with a little fiddling around  

[Captain Chaos]

the downtubes need bending quite a bit to make them fit in the ports, and then they hit the sump pan, would need a lot of rednecking to make the headers not leak.

[Jaydee]

15 minutes ago, Duckndive said:

Given the Inlet Ports are on different Centres it would make sense that the exhaust ports are as well....

But most aftermarket "not welded into the collector!" systems will fit either with a little fiddling around  

Nope. The w/c are identical exhaust port spacing.  Inlet flow might be different between waterboiler and oil cooled (carb spacing) but outlets are the same.  Easier to fit a w/c exhaust to a slingshot than a stock one as w/c exhaust hangs lower and further out from the engine, i.e. offers loads of clearance. The reason I mention that the downpipes were welded to the collector  (Cobra system) was to point out that the exhaust port spacing is the same. There is no fiddling around to fit. The downpipes need shortening to look right though because of the hang. 

[NorthernBloke]

Has anyone actually fitted an exhaust from an oilboiler or bandit etc to an 1100 WP?  I have an unknown system on mine its a four in to one but I need to remove it to change the oil filter so I'm looking for something that will clear the low sump and the oil filter, anyone have experience of a viable option, or do I need to spend 800 on a new four into one?

cheers

[nopokewithoutsmoke]

What about a GSXR1000 titanium system? I know some on here have fitted them on OC 11/12 engines. A search should tell you everything you need to know.

[NorthernBloke]

Yeah I've looked into them but from all the pictures its hard to tell where they might be a tight fit and how much room there is for access, hence me asking if anyone has done it and has any pictures.  It would be great if someone has done it and has pics of it. I don't want to go through buying lots of different ones just to see if I get lucky.

[nopokewithoutsmoke]

Google 'gsxr 1000 headers on gsxr1100w' and 'k3 GSXR 1000 header on 96 GSXR 1100 write up'. 

Should help. 

[NorthernBloke]

15 hours ago, nopokewithoutsmoke said:

Google 'gsxr 1000 headers on gsxr1100w' and 'k3 GSXR 1000 header on 96 GSXR 1100 write up'. 

Should help. 

Thanks Pal, Interesting read, still in 2 minds if its doable as the oil cooler doesn't appear to fit and some bending and heating is required. Will give it some thought.

[Madb]

On 10/18/2018 at 12:58 PM, Captain Chaos said:

What is the spacing of the exhaust ports on 750/1100W engines?

 

1-2 is 85mm       2-3 is 121mm approx  . Hope that helps

 

[Captain Chaos]

thanks

[Madb]

I know, late to the party, again. Anyway,

  Did you get them to fit?

[Captain Chaos]

no, threw them in a corner.

But now at last my original question is answered