Hello & advice on GSXR1100/750M

[Meerkat]

Good afternoon all,

I'm new to the forum so please be gentle....and if you cant be gentle please make it amusing :-)

I'm soon to be the proud owner of a 1992 GSXR1100M albeit it is in a rather sorry state and requires a lot of TLC to get it back to its former glory.

But, I've never been afraid of a bit of elbow grease and scuffed knuckles hence taking the challenge on.

There's lots to do but before I submerge myself in a full restoration (bikes to keep by the way not 'do up and sell on again' as I have always wanted one) I wonder if the collective would be kind enough to answer a few questions regarding potentially making it into a 7/11 rather than keep it stock ? :-

1) Would the 1100 tank and seat unit fit a 750M model frame ? If not what mods would be required ?

2) What mods are required to fit a M model 11 engine into an M model 750 frame ? I understand the rear engine mount will need modifying but unsure on anything else ?

3) Are there any other issues in doing this swap ? (electronics, fuel taps and lines etc)

There will likely be plenty more to ask but for now that seems a reasonable start.

I'm torn with the option of keeping it as an 11 or doing a 7/11. My head tells me keep it 'as is' but my heart says 'why the hell not'!!!! If its fairly straight forward and I may go the 7/11 route but if it means far too much messing I will just restore it.....because I don't want to delay riding it for too long!!!!!!!!!!!!!!!

Thank you all in advance of any help and advice it will be much appreciated.

Cheers.

:-) 

[R1guy]

Welcome.

Im all for modifying/messing around with bikes, but you won’t gain a lot from swapping to a 750 frame. I hate to be a bore, but in this case  unless the frame is  fubar focus your time/energy/monies on restoration/making it work as it should.

[wraith]

Welcome to OSS 

Can't help much on the gsxr frame bits, As I'm more on the steel framed stuff 

Someone will be along who will know, have you tried the search but sometimes works 

[Meerkat]

Good afternoon Guys,

Thanks for the feedback. I'm leaning more towards keeping the bike standard anyway for long term value (plus I'm hardly Kevin Schwantz in the skill department so wont fully appreciate the handling benefits!!

Cheers

[Dezza]

GSXR1100M project - what's not to like?

[Rene EFE]

17 hours ago, Meerkat said:

1) Would the 1100 tank and seat unit fit a 750M model frame ? If not what mods would be required ?

Yes

[Rene EFE]

17 hours ago, Meerkat said:

2) What mods are required to fit a M model 11 engine into an M model 750 frame ? I understand the rear engine mount will need modifying but unsure on anything else ?

That's it

[Rene EFE]

17 hours ago, Meerkat said:

3) Are there any other issues in doing this swap ? (electronics, fuel taps and lines etc)

No

[CockneyRick]

Don't use a 750 CDI on the 11 engine, has a higher rev limit & can pop your engine  

[Gixer1460]

3 hours ago, CockneyRick said:

Don't use a 750 CDI on the 11 engine, has a higher rev limit & can pop your engine  

Its hard enough getting an 1100 to its own redline under load let alone adding another 2000 rpm to it! Plenty 1100's die before 13,000!

[CockneyRick]

I agree when std exhaust & carbs running, but my old one used to freely rev all the way up.

[Meerkat]

Thanks for all the advice so far guys, much appreciated.

Given (I believe) the frames are very similar (albeit the 1100 was stronger apparently) and the main difference was a shorter swingarm and forks I have decided to stay as an 11 frame with the possibility of using a 750WN/WP swingarm and dropping the forks slightly.

Will keep you posted....or may be asking plenty more questions!!!!!

Cheers

[Rene EFE]

Get a K-frame  

[Meerkat]

2 hours ago, CockneyRick said:

I agree when std exhaust & carbs running, but my old one used to freely rev all the way up.

Hi Cockney Rick. A question on your old one (which by the way looks superb...always liked that colour)....what tyres were you running ? The rear looks huge!

[CockneyRick]

It's not, just the std 180 on it. Can't remember make as it was 14 years ago, but i'd guess either Pirelli or Dunlop as they were my prefered choice  

[MeanBean49]

Im pretty sure theres no point doing a 7/11 with a slingshot frame unless its a 750 J frame (short stroke) they are all the same dimensions. The J is a bit smaller and has slightly different geometry.

Keep it 1100 and do a nice job if it imho.

Welcome btw

[Meerkat]

7 hours ago, CockneyRick said:

It's not, just the std 180 on it. Can't remember make as it was 14 years ago, but i'd guess either Pirelli or Dunlop as they were my prefered choice  

That would make sence. Unlike some other tyre brands that short change us punters, Dunlop (& Pirelli to an extent) always seem to have 'more rubber for your buck' with tyres 'big' for their size. I've had tyres fro  other brands that have been well under size (even when they are supposed to be same size!). Cheers

[Meerkat]

6 hours ago, MeanBean49 said:

Im pretty sure theres no point doing a 7/11 with a slingshot frame unless its a 750 J frame (short stroke) they are all the same dimensions. The J is a bit smaller and has slightly different geometry.

Keep it 1100 and do a nice job if it imho.

Welcome btw

Agreed (now!). I've come to the conclusion that 'if' I do want to go down the route of a 7/11 style all I need to do is drop the forks through the yokes and fit a 750 swingarm as this would result in almost correct geometry to a 750 dimensions. Admittedly the 1100 frame is apparently 3 kgs heavier than the equivelent 750 but then in its defnece its beefed up to cope with the extra weight and grunt of the motor.

And ultimately......a 7/11 geometry only really benfits a rider who can ride a bike to its absolute limits round a track....and people....I am not one of these immortals!

:-)

[CockneyRick]

21 minutes ago, Meerkat said:

That would make sence. Unlike some other tyre brands that short change us punters, Dunlop (& Pirelli to an extent) always seem to have 'more rubber for your buck' with tyres 'big' for their size. I've had tyres fro  other brands that have been well under size (even when they are supposed to be same size!). Cheers

Not really, the reason i prefer Pirelli & Dunlop is because they err on the narrower of the 180 & therfore on most of my assemblies makes chain run & fitment easier  

[Meerkat]

49 minutes ago, CockneyRick said:

Not really, the reason i prefer Pirelli & Dunlop is because they err on the narrower of the 180 & therfore on most of my assemblies makes chain run & fitment easier  

Hmmmm. We seem to agree to dissagree. I had a MICHELIN Pilot Road 4 on a 5.5" rim recntly that measured 178mm across and when I fitted a DUNLOP Sportsmart 2 Max it measured 187mm with the very same manual vernier guage. :-)

[Meerkat]

Hi Guys,

Strip down is in progress. The usual things have reared their ugly heads.

Both seat panels have lugs missing in various places. They can be fixed. Anyone out there with advice on this ? Or any spare panels out there ?

Another ball ache is the rear shock is....how can I put this politely....F##ked!!!

I'm reading so many different things about swapping for later model SUZUKI rear shocks such as BUSA's and GSXR1000's. Again any advice on this or links to previous threads would be much appreciated.

Thanks,

Mike

 

[davecara]

There's loads of shocks that'll fit, but we aware that anything with a piggy backed reservoir might foul the battery box.

Get yeself another 41 posts in and you'll probably find one on here!

[Meerkat]

Hi Davecara,

Thanks for advice.

I'd read that many of the piggy back shocks will fit albeit most are slightly longer (not a problem I'm quite tall and plan to drop the forks through the yokes anyway).

 

[Meerkat]

I'd also heard the piggy back style made foul the battery box, again no issue and I quite like the fact it doesn't have a separate reservoir adjuster.

[Meerkat]

As you can see I am doing loads of separate posts...