2017 crankcase "mod" for 2016 model? - Suzuki GSXS1000 Forum
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post #1 of 14 Old 01-08-2020, 11:33 AM Thread Starter
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2017 crankcase "mod" for 2016 model?

I was looking up the difference between the 2017 150hp model and the 2016 145hp model and it seems Suzuki did something with the crank case ventilation, is this something easily done to get more power out of the 2016? Not like I need much more power but I hate leaving some on the table.. lol
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post #2 of 14 Old 01-08-2020, 02:24 PM
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The 2018 description says this:

New ventilation holes between the cylinders reduces pumping loss within the crankcase so the engine can deliver more power and torque.

My impression was that these were actual holes in the block between cylinders.

I'm not sure if something else is going on in 2017... Looking at Suzuki's website nothing jumped out at me.
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post #3 of 14 Old 01-08-2020, 02:54 PM
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Same old write up they've been announcing on several GSXR models over the years. I doubt there were actually any holes ever added internally. If this was such a good idea why wait until after a production run of a year or two then add it knowing all along you had advertised it done on other inline 4 models previously.
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post #4 of 14 Old 01-08-2020, 03:37 PM
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Originally Posted by roy826 View Post
Same old write up they've been announcing on several GSXR models over the years. I doubt there were actually any holes ever added internally. If this was such a good idea why wait until after a production run of a year or two then add it knowing all along you had advertised it done on other inline 4 models previously.
Probably because of tooling cost and/or tooling lead time. Even something as simple as adding some holes in a casting can become a significant undertaking when dealing with something as complex as an engine block casting.
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post #5 of 14 Old 01-08-2020, 04:14 PM
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Probably because of tooling cost and/or tooling lead time. Even something as simple as adding some holes in a casting can become a significant undertaking when dealing with something as complex as an engine block casting.
My point was they had the same advertisement way back in 2008 on the GSX-R1000s which was nothing more than a K5 engine then.
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post #6 of 14 Old 01-08-2020, 06:53 PM
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At BikeBandit.com, the part #s for the 2017 & 2018 GSX-S 1000 crankcase (upper, middle, lower come as a set) are the same. Could be an error. Could be interchangeable, out of pre-2018 sets so just sell the 2018+. Probably a lot of work for 4 HP.

CRANKCASE SET 11301-04840 $2,371.95

Last edited by verbatim; 01-08-2020 at 06:55 PM. Reason: Added the middle.
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post #7 of 14 Old 01-09-2020, 06:56 AM
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yes the later models seem to have k8 case ventilation holes between cylinders 1-2 3-4, i have carried out that mod on my 16 gsx-s cases, i think i posted some pics of it too
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post #8 of 14 Old 01-09-2020, 09:08 AM
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Originally Posted by temporarykiwi View Post
yes the later models seem to have k8 case ventilation holes between cylinders 1-2 3-4, i have carried out that mod on my 16 gsx-s cases, i think i posted some pics of it too
Your post sent me in search of your earlier posts.
You are quite hardcore!
I take the following is the post to which you were referring. Can you verbally point out where in the photo are these ventilation holes? Thanks.

https://www.gsxs1000.org/forum/367614-post38.html

EDIT: I looked further back in above post and found this other post that includes a diagram of the vent holes:
https://www.gsxs1000.org/forum/361902-post25.html

Last edited by verbatim; 01-09-2020 at 09:21 AM. Reason: Additional diagram
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post #9 of 14 Old 01-09-2020, 04:08 PM
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How much does that 5hp cost to have done?

Might be cheaper to sell your 16 and buy a 17.

If you do it right, you could even come out with money in your pocket.
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post #10 of 14 Old 01-09-2020, 07:17 PM Thread Starter
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Okay that's way more involved than I was hoping, I thought it was something to do with a pcv breather or valve or something to that effect, thanks all
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