I would ask your cam builder... different profiles might call for different cam timing numbers

but here are webcams recommendations for their performance regrind cam
webcamshafts.com/pages_vehicles/motorcycle/suzuki_install_data/tc_002742_071008.html

The hardwelded high lift cam timing recommendations are a little different so my recommendation about getting the cam builders guidance

 

I would not do a regrind would just use the original cams with the added adjustable cam gears and thinner head gasket.

 

@JCW Some years ago I had a 2013 Kawasaki Zx6r and I did the Factory race setup myself degreed the intake cams from 102.25>107.5Intake x 110 Exhaust(No Change) with a .20mm Head gasket... It made the bike pull so much stronger. Just wondering if any info is out there for degree settings for the 2011 GSXR750 when I install the adjustable cam gears on the stock cams and thin head gasket to get some more performance gains.

 

Optimal cams angle are selecting by running series of dyno runs usually. This is objective. Any other way is subjective, I guess.

 

Very true @XPOH Was just hoping that someone did the application before with a different degree setting. If not I will just degree the cams to the stock settings with the new squish from the thin head gasket.

 

I would be interested in seeing what the max valve lift of the 750 cams will be...
Strange suzuki put in all different kinds of lifts and durations between the 600 and 750 in the past. That made for some interesting cam swaps back in the day... the 06-07 750 actually had lower lift shorter duration exh cams than the 600. People were swapping cams all over for power gains.
Remember that cam max lift and valve max lift weren't exactly 1:1.

 

Why did you buy adjustable gears without a plan to do some testing and tuning to find the right setting for your engine? Or, more simply, why did you buy something adjustable without knowing how to adjust?

 

@Chuckster I know how to degree the cams check for valve lash and the clearance... When you install a thinner head gasket or deck the head the timing does change. I plan on recording all the info when I'm complete and the hp gains...Hopefully not loss 😅... The engine is bone stock currently what the bikes got...
Full M4 stainless steel
AIS delete
Sprint P08 Filter
FTECU Flash
Translogic Quickshifter
Gearing 15f 45r
Currently 128hp on 93 Oct Pump Fuel

 

When you install a thinner head gasket or deck the head the timing does change.

This difference is not significant enough for mention about it I guess.

 

I did the same upgrade on a 2013 Kawasaki 636 some years ago with the help of a member in a Kawasaki Forum (Very knowledgeable guy PainfullySLO) at that time the 636 I had was 120hp after installing the head gasket and degreed the cams to the recommended settings the values bumped up to 126hp (Same gearing 15/45 and 93 Fuel) Amazing what those little 636 engines can do. Here's the link he had that I followed when I did my Kawa back in the day...
Just a little Sunday project... | Kawasaki Ninja ZX-6R Forum (zx6r.com)
Was really impressed by his write up and mechanical expertise as a gear head... I will follow suit and post the process here for you guys when I begin.

 

Sounds like you got a plan...

A suggestion...
You might want to take your readings and mark them out on the adjustable cam wheels... that way you can make "relatively" quick adjustments on bike without needing to pull the engine and set up the degree wheel and micrometer gauge all over again.

Watch those clearances with the thinner head gasket when you advance the intake or retard the exhaust. piston to valve and valve to valve.

What did you determine the stock gasket thickness to be? compressed or new?

 

Yes I will make reference marks before I press out the old cam gears before I press on the adjustable type.

 

As far as timing... the guys that know what the answer to this stuff is aren't going to tell us for free.

The thing with cam timing in general though is that it doesn't really find OVERALL power increases...especially on stock cams. it just kinda rotates the torque/hp curve on a point in the middle to favor low end torque or high end power. Their real utility comes when you have high lift, longer duration cams and need to fine tune their performance.

And yes, with a thinner head gasket you retard cam timing a little... how much? idk

 

The thing with cam timing in general though is that it doesn't really find OVERALL power increases...especially on stock cams. it just kinda rotates the torque/hp curve on a point in the middle to favor low end torque or high end power. Their real utility comes when you have high lift, longer duration cams and need to fine tune their performance

Absolutely correct!

 

I hope you've gotten some guidance with the head gasket...

People will sell and say anything on forums. And a thinner head gasket comes with a lot of possible consequences.

Advising on a correct thickness head gasket really means you really know what your piston deck height is and resulting squish clearance and compression ratio... No way you know this unless you measure yourself...

directly measuring combustion chamber volume and deck height is not hard to do but does require a few specialized equipment... I bought a pipette and micrometer with deck bridge in the distant past and am familiar to doing it, but I'm far from being an expert. They are collecting dust after I built my old 80 yamah triple.

 

And a thinner head gasket comes with a lot of possible consequences.

With negative advantage as rule.

 

Just a heads up... Vesrah lists the thickness of the stock 2011 head gasket at 0.70mm. And their race gasket for the 750 is 0.45mm.

Vesrah .45mm Racing Head Gasket Suzuki GSXR750 2006 - 2017 - RG-3006

Vesrah .45mm Racing Head Gasket Suzuki GSXR750 2006 - 2017

www.superbikeunlimited.com

cometic lists two thickness for the stock replacement 0.027 and 0.018. which is 0.68mm (close to stock) and 0.45mm (their race gasket)

https://www.mpsracing.com/products/Cometic/Cometic%20Powersports%202016.pdf

 

Wow reading threads like this makes me realize how much I DONT know. I love stuff like this but for others to do and me to marvel at lol.

 

Does anyone happen to have the GSX-R750 L1-9 2011-2023 intake and exhaust camshalf maximum lobe lift specs handy?

 

Does anyone happen to have the GSX-R750 L1-9 2011-2023 intake and exhaust camshalf maximum lobe lift specs handy?

This info should be in the Service Manual, Chapter Engine Mechanical, Camshaft inspection. I have this one only for the 600 L1-L2

 

This info should be in the Service Manual, Chapter Engine Mechanical, Camshaft inspection. I have this one only for the 600 L1-L2 View attachment 302234

can you help me out how to compute the maximum lobe lift from that graph?

 

mmmm... Just a search...

Is this helpful?

 

You measure it..... simply put.

 

I don’t have any loose cams to put on the blocks and just shipped out all four used engine cores to the team so I’m SOL. I guess I’ll eBay a set just to measure them. I have all the other data, just not the most basic piece of info (maximum lift).

 

If you have a bike inhandy you could easy measure it. Pull off the head cover and measure the lobe lift using a dial gauge with magnet stand while rotating the crankshaft with a socket wrench via the inspection hole

 

I'm super curious now why you need to know... after the "shipping to the team".

 

Just for an interest info I guess

 

If measuring off the cam, you would need that number from the manual and the base circle size to find cam lift. But also realize the actual lift might be greater depending on the cam followers lever arm.
Otherwise you can measure lift directly off the valve as pictured above.

APE has engine numbers for various bikes unfortunately our gen 750 is not on there.

You could just ask the builder what he finds.

 

Direct acting bucket.

They don’t have R750 L1 specs.