2006 GSXR 750 engine build

[Guest]

Thought you guys might enjoy this. I built a 2006 GSXR 750 engine from scratch last winter.

Pics here: https://www.facebook.com/paul.johnson.98892615/media_set?set=a.10216545588345259&type=3

 

[Buffalo Bill]

Interesting to see the tech improvements in Suzuki engines since the GS series.
Amazing piston design in particular. Are the camshafts hollow?
Thanks for posting!
BiL

 

[Guest]

Interesting to see the tech improvements in Suzuki engines since the GS series.
Amazing piston design in particular. Are the camshafts hollow?
Thanks for posting!
BiL

The more you look at modern sportbike engines the more you realize they are like mini Formula race car engines - capable of revving to 16K RPM reliably and making huge HP numbers for their size. This 750 cc engine makes 150 crank HP. Modern literbikes are making 200+ crank HP stock.

The engineering and manufacturing/machining to make this happen is nothing short of amazing. Weight savings is everything in these designs to reduce inertial resistance, from the short skirt pistons to the hollow camshafts to the stock titanium valves. I was so impressed with the design of all the components when assembling this engine.

 

[Buffalo Bill]

I have a 92 GSXR 1127 in my steel framed GSXF Katana track bike, and it's about impossible to get the dry weight below 450lb. It's not the steel frame, it's all the steel in the engine that's making it heavy.
Did you weigh the engine with starter & stater together? I'd like to compare the weight to my 1990 750cc engine.
Guy Martin said he could pick up a 2K GSXR1000 engine, but the older 1100 was a 2 man lift.

 

[Guest]

I have a 92 GSXR 1127 in my steel framed GSXF Katana track bike, and it's about impossible to get the dry weight below 450lb. It's not the steel frame, it's all the steel in the engine that's making it heavy.
Did you weigh the engine with starter & stater together? I'd like to compare the weight to my 1990 750cc engine.
Guy Martin said he could pick up a 2K GSXR1000 engine, but the older 1100 was a 2 man lift.

The 06/07 GSXR 600/750 engines weigh around 150 pounds.

 

[GregT]

I have a 92 GSXR 1127 in my steel framed GSXF Katana track bike, and it's about impossible to get the dry weight below 450lb. It's not the steel frame, it's all the steel in the engine that's making it heavy.
Did you weigh the engine with starter & stater together? I'd like to compare the weight to my 1990 750cc engine.
Guy Martin said he could pick up a 2K GSXR1000 engine, but the older 1100 was a 2 man lift.

Guy's a weedy Brit, lol. The early 16v roller crank 1100 used to be a one man lift for me when I had a shop. Not now. The GSXR1100 still is a one man lift. Late GSXR1000's which I still see are a one man lift. The RC30 I've just done is marginal, I wouldn't like to lift it off the floor.
The early GSXR1100 racebike we ran for some time was around 370lb dry. We used fiberglass seat and a smaller alloy tank on that as well as a lightweight wiring harness with no starter. Marvic mags too. I think you'd be surprised at the difference between the alloy GSXR chassis and your steel Katana. There's a lot you can do to take wight off what you've got now.

 

[Buffalo Bill]

Guy's a weedy Brit, lol. The early 16v roller crank 1100 used to be a one man lift for me when I had a shop. Not now. The GSXR1100 still is a one man lift. Late GSXR1000's which I still see are a one man lift. The RC30 I've just done is marginal, I wouldn't like to lift it off the floor.
The early GSXR1100 racebike we ran for some time was around 370lb dry. We used fiberglass seat and a smaller alloy tank on that as well as a lightweight wiring harness with no starter. Marvic mags too. I think you'd be surprised at the difference between the alloy GSXR chassis and your steel Katana. There's a lot you can do to take wight off what you've got now.

Thanks to both you guys.
I'm working on diet ideas like a 3 gal plastic tank under a fiberglass fax tank, plus unbolting stuff.
It's amazing how 2k bikes have all mod cons and still weigh 400lb dry.

 

[Guest]

Thanks to both you guys.
I'm working on diet ideas like a 3 gal plastic tank under a fiberglass fax tank, plus unbolting stuff.
It's amazing how 2k bikes have all mod cons and still weigh 400lb dry.

What have you done so far to save weight? Aftermarket exhaust, wheels, lithium battery etc etc?

Also what is the weight of the older GSXR 750 engine?

 

[GSXR7ED]

Thought you guys might enjoy this. I built a 2006 GSXR 750 engine from scratch last winter.

Pics here: https://www.facebook.com/paul.johnson.98892615/media_set?set=a.10216545588345259&type=3

Wow!

Lots of pics!

I owned a Y2K Gixxer 750...never ventured to do what you did. I left that to the bike shop.

Nicely done!

Ed

 

[Buffalo Bill]

What have you done so far to save weight? Aftermarket exhaust, wheels, lithium battery etc etc?

Also what is the weight of the older GSXR 750 engine?

I haven't weighed the 750 or 1127 engines yet, bet I regret I did not weigh the 1127 before I installed it.
Weight reduction so far:
cut rear steel subframe off, replaced with aluminum subframe from 93 GSXR.
Installed rear seat and cowling with fiberglass racing tail section from Airtech.
Using BikeMaster Lion battery.
Clip-on handle bars
13" slip-ons both sides
Removed OEM setbacks, just have foot pegs now (no photo yet)
Gained weight installing wider GSXR wheels front and rear, plus swing arm bracing.
Considering selling the 1127, and going back to 750cc.

 

[Spyder]

Both very cool bikes. Love 1100 Kat. Bet that's a blast to ride.

 

[Guest]

I have a 92 GSXR 1127 in my steel framed GSXF Katana track bike, and it's about impossible to get the dry weight below 450lb. It's not the steel frame, it's all the steel in the engine that's making it heavy.
Did you weigh the engine with starter & stater together? I'd like to compare the weight to my 1990 750cc engine.
Guy Martin said he could pick up a 2K GSXR1000 engine, but the older 1100 was a 2 man lift.

My '83 weighed 440 with a full tank on the scale at us131 near Martin this year. Will have to post up a pic of it so you can see what it has for wheels suspension ect...

 

[Buffalo Bill]

My '83 weighed 440 with a full tank on the scale at us131 near Martin this year. Will have to post up a pic of it so you can see what it has for wheels suspension ect...

Cool, I'm seriously considering building up the 90 Katana 750 engine and selling the 1127. Or just selling the bike as is, then buying a post 2K GSXR750.

 

[GregT]

Cool, I'm seriously considering building up the 90 Katana 750 engine and selling the 1127. Or just selling the bike as is, then buying a post 2K GSXR750.

Sell it as is. The later rolling chassis is light-years better.....

 

[Spyder]

You should get a decent buck for that Kat. Very good looking bike. I bet it's a blast to ride with that power plant in it. My next GSXR will be an '02 750-1000.

 

[Guest]

Cool, I'm seriously considering building up the 90 Katana 750 engine and selling the 1127. Or just selling the bike as is, then buying a post 2K GSXR750.

I would suggest a 2006+ GSXR 750 since they make great power (150 crank HP), are dead reliable with the exception of the typical janky Suzuki R/R & stator, and have changed little since 06 until the present day. This makes parts really cheap if you need to replace something.

 

[Buffalo Bill]

I would suggest a 2006+ GSXR 750 since they make great power (150 crank HP), are dead reliable with the exception of the typical janky Suzuki R/R & stator, and have changed little since 06 until the present day. This makes parts really cheap if you need to replace something.

Scary power! Kinda the reason I'm thinking about 600cc.

 

[Guest]

Scary power! Kinda the reason I'm thinking about 600cc.

Well, that's 150 peak crank HP, 130-135 RWHP. Perfectly tractable, linear power.

That extra 150 cc of displacement gives the 750 has much more usable torque at street legal speeds than the 600, which is pretty much gutless below 8000 RPM.

You have to keep revs high on the 600 to get decent acceleration. On the track this isn't an issue but on the street it's annoying.

I've had both a 600 and a 750 motor (late model GSXR 600/750 bikes share the same chassis) in my bike and greatly prefer the 750 since it is equally at home on the track and street. Perfect blend of power and graceful handling.

 

[GSXR7ED]

I've never ridden a 600...but the Y2K/750 was awesome on the street. Of course, I never pushed it to its full potential: 135hp.

Ed

 

[Spyder]

I absolutely love my 750. Keeps up with all of the litre + bikes in my area. Lighter, and handles better. Plus it's at least 10 years older than most of the sport bikes I ride with. The power curve on the 750's is about as perfect as they get. As stated, the 600 needs to be screaming to wring the power out of them. I always wondered why these punks cruise around in 2nd gear at 7000 rpm, until I rode one...