Reimo 900cc from the GT750

[Zunspec4]

I came across this, has anyone heard of one before? Came with the short info below:

This is a Reimo " Golden Bullet" very rare 900cc GT750. Reimo was a famous German Sidecar racer.



Cheers Geoff

[jabcb]

A smidgen of info about it is here:
http://www.oldjapanesebikes.com/GT750_f ... e/page-A52

[old racer]

Mahle made the pistons for these,A mate of mine once had an motor.

[Zunspec4]

Thanks guys,

Wish the same sort of kit was still available, a ported/tuned 900cc triple would really be something.

Cheers Geoff

[tz375]

To get close to 900cc, the bore would have to be 76.0mm for 871cc to 77mm for 894cc. With the way that so many barrels have the liners misplaced, I wonder how they got a clean bore at that size. Do you know if they pressed in new liners or just machined them very carefully?

Ocelot offered 750 and 850 race motors and the piston forgings came from Wiseco unmachined IIRC. Rings were 21-7400XC which means they were 74mm for 825cc. Interesting that they didn't use a 75mm piston for 848cc. One might speculate that 74 was as large as they could machine stock liners safely. And that suggests that Reimo may have had to fit new liners to get to "900".

Their 74 catalogue says that they made 70 rear wheel HP, which is good, but hardly shattering. Several of us have bikes that make more than that at the rear wheel with fairly simple mods. John McCann's 750 Ocelot motor was tested at 117hp in his beautiful race car.

It would be interesting to know how large the Reimo was and how the barrels were machined.

[yeadon_m]

What I particularly liked about the Reimo mods I read about in the translated brochure is the lack of bad effects on 'normal driveability'. While its doubtless lovely to have +20BHP on tap and very noticeable, its a pain if it comes at costs such as difficulty starting, a 'peaky' motor and reduced reliability. Then its not so much fun as unless we're doing racing, we mostly ride in the low to mid throttle openings.
I recall a long memo from GT triple enthusiasts back in the day when these bikes were still on sale, detailing improvements that can made to power, handling etc, such as simply putting VM28 carbs from a GT550 on a GT380, followed by halving the piston to head clearance (either head skim or fit thinner head gaskets), followed by light port rework etc, and you can dial in a mildly better bike with no loss in day to day pleasure. I can attest to the seat of pants dyno benefits from VM28s on a GT380 and its the nicest all round bike I ride.
If Reimo still did these mods for the GT750, I'd get out my virtual cheque book and arrange to lend them my bike
Cheers,
Mike

[Jimroid]

I was going to mention the Oscelot big bore, but tz beat me to it. They were made for sidehack racing . There were a few of those running around the Midwest USA in the '80's. If memory serves me correctly the fastest guys were Don Framstead( Brainerd) and Paul Knoll (Road America). They were extremely torquey rigs. Maybe they have parts laying around yet?

[old racer]

To get close to 900cc, the bore would have to be 76.0mm for 871cc to 77mm for 894cc. With the way that so many barrels have the liners misplaced, I wonder how they got a clean bore at that size. Do you know if they pressed in new liners or just machined them very carefully?

Ocelot offered 750 and 850 race motors and the piston forgings came from Wiseco unmachined IIRC. Rings were 21-7400XC which means they were 74mm for 825cc. Interesting that they didn't use a 75mm piston for 848cc. One might speculate that 74 was as large as they could machine stock liners safely. And that suggests that Reimo may have had to fit new liners to get to "900".

Their 74 catalogue says that they made 70 rear wheel HP, which is good, but hardly shattering. Several of us have bikes that make more than that at the rear wheel with fairly simple mods. John McCann's 750 Ocelot motor was tested at 117hp in his beautiful race car.

It would be interesting to know how large the Reimo was and how the barrels were machined.

I suspect the Reimo 900 had very little port work if any,But it would have had some grunt.
I'm not sure if the cylinders were bored or sleeved,The one my mate had was ported i think to TR spec.
It was in a TR chassis,There is a pic of it somewhere on the net.

[tz375]

I was going to mention the Oscelot big bore, but tz beat me to it. They were made for sidehack racing . There were a few of those running around the Midwest USA in the '80's. If memory serves me correctly the fastest guys were Don Framstead( Brainerd) and Paul Knoll (Road America). They were extremely torquey rigs. Maybe they have parts laying around yet?

They were also very popular with the DSR light sports car racing crowd http://sports.racer.net/chassis/ocelot/page1.htm" onclick="window.open(this.href);return false;

I saw a listing on ebay a few years ago that showed lots of Ocelot badges, pistons, rings, etc plus a bike they called Blackie. Don't have any info on who was selling or who bought it, but it would be easier to start again and get a batch of modern pistons forged and machined. Liners might be another issue, but the heads can always be welded and re-machined to match the bore spacing on your barrels.

[GT-Karl]

The exhausts are dutch made "Bullet" from the BOS company. I helped the former owner of the " Goldener Schuss" , i guess it's the only remaining one, to swap a set of Allspeeds to this, giant sound......!

Karl