Neveragain55 Posted November 4 Posted November 4 (edited) Ok, here we go.... I have searched the internet like a madman (and in here) looking to see if I can find any information on the differences of how much weight difference there is between the various air cooled GS engines. In other words: How much does a GS550 engine weigh (not the entire bike) How much does a GS750 engine weigh (not the entire bike) How much does a GS850 engine weigh (not the entire bike) How much does a GS1000 engine weigh (not the entire bike) When you put this question in Google, all you get are results telling you how much the entire bike weighs. Why do I want to know? I'm planning on building a cafe racer and I started out planning on using the 550 engine, and then I thought to myself, "I wonder if the larger CC engines weigh any more" You see where this is going... Any and all replies are welcome, thanks in advance Edited November 4 by Neveragain55 Quote
imago Posted November 4 Posted November 4 I can only give you a rough figure of 70 + Kgs, and there's not much between them as they all have the roller bearing crank. The 850 will be heaviest due to to the shaft drive. The 16v 1100 is about 80Kgs, and the 16v 750 is about 60 as that's a plain bearing crank. 1 Quote
Neveragain55 Posted November 4 Author Posted November 4 17 minutes ago, imago said: I can only give you a rough figure of 70 + Kgs, and there's not much between them as they all have the roller bearing crank. The 850 will be heaviest due to to the shaft drive. The 16v 1100 is about 80Kgs, and the 16v 750 is about 60 as that's a plain bearing crank. Thanks that definitely helps. The 550 is capable of doing just about 100mph which is good enough for a light cafe racer. My daily ride has been a 1979 (mostly stock) GS750E, and I've had her nipping at 124mph If a 750 is roughly the same weight as the 550, I would consider using that. If a 1000 was no more than 10 or 15 pounds heavier than a 550 I would also consider using that. But I am trying to keep the bike as light as I possibly can, while maximizing the most power I can. Thanks for the reply. Quote
PaintItBlack Posted November 5 Posted November 5 I’m pretty sure the gs1000 engine is about 10lbs lighter than the 750, sure I heard that somewhere, due to the lack of kickstarter mechanism and a lighter crank design 3 Quote
Neveragain55 Posted November 5 Author Posted November 5 8 hours ago, PaintItBlack said: I’m pretty sure the gs1000 engine is about 10lbs lighter than the 750, sure I heard that somewhere, due to the lack of kickstarter mechanism and a lighter crank design That's interesting, do you now of any site, or graph, or chart of any kind that would specifically list the exact weight's of all of the GS engines? Quote
imago Posted November 5 Posted November 5 9 minutes ago, Neveragain55 said: That's interesting, do you now of any site, or graph, or chart of any kind that would specifically list the exact weight's of all of the GS engines? It's been asked on here a few times, and I like others have looked without success. I think part of the problem is having access to all the variations. I several people weighed what they had you'd then have to specify what was or wasn't included, with or without starter, side cases etc. So I think the best you're going to do is rough or approximate figures. 1 Quote
PaintItBlack Posted November 5 Posted November 5 1 hour ago, Neveragain55 said: That's interesting, do you now of any site, or graph, or chart of any kind that would specifically list the exact weight's of all of the GS engines? No I don’t know of any site with all that information, I was reading this article earlier though, somewhere it mentions the gs1000 engine weighs in at 199.5lbs which was 10lbs lighter than the 750, believe the 1000 is also slightly shorter from front to back, than the 750 https://www.cycleworld.com/suzuki-gs750-and-gs1000-motorcycle-history-cycle-world-classics-remembered/ 1 Quote
coombehouse Posted November 6 Posted November 6 You could use an oil cooled motor, they are lighter than the old air cooled lumps Quote
andyroach Posted November 7 Posted November 7 The other option is to tune the engine you have. I've always thought that the 550 (GS/GSX) was ripe for a bit of a tune. maybe a big bore to over 600, flow the head, lumpy cams and bigger carbs. you could also lighten the frame, by using an alloy frame The variation's are endless. and this is the thinking that led me to tune a GS400 and melt a piston by getting the fueling wrong. Let the games begin! Quote
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