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Hello everyone, I need some information from those in the know about cylinder heads for the Suzuki 4-valvers.
My situation is this:
The local wrecking yard recently acquired a 1982 katana 1100 - complete in every respect except it was missing the cylinder head. Apparently it was a race-tuned motor - ported, flowed, etc. - and the previous owner sold it off before forwarding the rest of the bike to the wrecker.
1100 motors are getting a bit rare, or so it seems in my neck of the woods, and I'd really like this motor for an upcoming project.
This wrecker also has a few GSX750 motors lying around, and we managed to find two cylinder heads which (he says) come from the 750. Judging by the camshaft cover bolt patterns, one is from an '82 model, the other either an '80 or '81 model. I don't know much about the 4-valvers (I've always had 2-valvers) - so I was a bit surprised when both of these cylinder heads dropped straight onto the 1100 block.
You probably know what I'm going to ask next. Is it possible to adapt 750 cylinder heads to the 1100?
I've had a quick look at various parts diagrams, and noticed straight away that these early 80-82 model 750 & 1100 4-valvers share some top-end parts. The only differences seem to be mainly confined to the valves, cams & rocker arms. As an example, it seems the 1983 Katana 750 & 1100 both share the same intake (or is it exhaust) cam part number. By the way, I forgot to mention, I do have two sets of (confirmed) 1100 camshafts, so ideally they'll be used if I can get a 750 cylinder head to work.
I imagine at the very least I'm going to have to modify the ports and valve seats. But what else is required?
Could this be done? Has anyone tried this? If so, how?
Thanks in advance for any help.
Pat
My situation is this:
The local wrecking yard recently acquired a 1982 katana 1100 - complete in every respect except it was missing the cylinder head. Apparently it was a race-tuned motor - ported, flowed, etc. - and the previous owner sold it off before forwarding the rest of the bike to the wrecker.
1100 motors are getting a bit rare, or so it seems in my neck of the woods, and I'd really like this motor for an upcoming project.
This wrecker also has a few GSX750 motors lying around, and we managed to find two cylinder heads which (he says) come from the 750. Judging by the camshaft cover bolt patterns, one is from an '82 model, the other either an '80 or '81 model. I don't know much about the 4-valvers (I've always had 2-valvers) - so I was a bit surprised when both of these cylinder heads dropped straight onto the 1100 block.
You probably know what I'm going to ask next. Is it possible to adapt 750 cylinder heads to the 1100?
I've had a quick look at various parts diagrams, and noticed straight away that these early 80-82 model 750 & 1100 4-valvers share some top-end parts. The only differences seem to be mainly confined to the valves, cams & rocker arms. As an example, it seems the 1983 Katana 750 & 1100 both share the same intake (or is it exhaust) cam part number. By the way, I forgot to mention, I do have two sets of (confirmed) 1100 camshafts, so ideally they'll be used if I can get a 750 cylinder head to work.
I imagine at the very least I'm going to have to modify the ports and valve seats. But what else is required?
Could this be done? Has anyone tried this? If so, how?
Thanks in advance for any help.
Pat
As I said in the original post, I imagine that will involve replacing the valve seats with oversize ones to suit the 1100 valves and resizing of the ports. I'm up to that - I've got a pretty good machine shop here at home.
, I'll use that. I'm just wondering if a 750 head could be a stop-gap solution.
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