New style 650 exhaust cam in older bikes? - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 13 Old 08-30-2019, 12:57 AM Thread Starter
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New style 650 exhaust cam in older bikes?

The new DL650s have a redesigned exhaust cam.
"New Exhaust Camshaft
For the unique character of the V-Strom 650, the engine needs to be strong not only at the top end but at the frequently used low to mid-range. To meet these demands, a new high lift exhaust camshaft that was developed for the new SV650 has been installed, resulting in a boost in torque and power in the mid-to-high rev-range, providing the rider with an exciting ride when riding sportingly, and a stress-free character for daily rides or on a long haul, simply enhancing the attractions of the new model."
Suzuki website

Does anyone know if it is feasible to upgrade the older bikes to this cam? Or is the head redesigned, too?

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post #2 of 13 Old 08-30-2019, 06:44 AM
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Not 100% sure but I once tried to fit the crash bars from a Wee onto a Glee and they would not fit.

The Glee's rocker cover on the front cylinder was hitting the crash bars, the bump where the cam sprocket is appeared bigger than the one on the Wee, a part number check could confirm this.

2 things: the crash bars were well used and had some bends that could have affected their fit and it was all happening in a dirt paddock so some mistakes could have been made.

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post #3 of 13 Old 08-30-2019, 10:48 AM
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I put Gladius cams in my L2 650. All 4. My guess is that they would work.

2007 they went to dual spark plug heads.

Need to check the lift specs.
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post #4 of 13 Old 08-30-2019, 11:06 AM
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Quote:
Originally Posted by D.T. View Post
I put Gladius cams in my L2 650. All 4
And the result? Is it worth it?

I've been thinking about doing this with my L4 650.

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post #5 of 13 Old 08-30-2019, 11:36 AM
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I think so. GW gave me the specs and they have higher lift.

I never got a chance to Dyno it though. Only thing I noticed (downside) is a bit of detonation around 7k rpm.

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Where did you find that cam info on the suzuki website? I found it, never mind.

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Last edited by D.T.; 08-31-2019 at 10:03 AM.
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post #6 of 13 Old 08-30-2019, 07:35 PM
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Be interesting to see full specs, lift, duration, overlap, along with installed timing. If it breaths significantly better, maybe need to reflash the ECU. And move to a higher grade of gas, perhaps, if combustion pressures are up. Maybe better valve springs as well.

Would have thought that an upgraded intake cam would yield better performance gains than the exhaust.
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post #7 of 13 Old 08-31-2019, 01:46 AM
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Quote:
Originally Posted by D.T. View Post
I think so. GW gave me the specs and they have higher lift.
I never got a chance to Dyno it though.
I basically use my 'Strom as a street bike. I'd like a few more ponies (without the DL1000 upgrade), I don't need tractor-like torque at low RPMs for off-roading. The SVF and SV bikes also have the Gladius motor and put out 70+HP whereas the 'Strom is low 60's HP. A cam swap is an easy upgrade to up HP to high 60's but I don't know what the gain would be without ECU, exhaust or intake mods that I'd like to avoid.

Quote:
Only thing I noticed (downside) is a bit of detonation around 7k rpm.
This would be a problem. Does it go away with mid-grade gas? Is your bike stock other than cam swap?

Quote:
Where did you find that cam info on the suzuki website?
I have not found any cam info but I have read in various forums that the SFV/SV exhaust and intakes have more lift than the DL. I've been comparing the SFV and SV engine specs and parts fiche. Cylinder, cylinder head, springs, valves everything but the cams and maybe the pistons are the same as far as I can tell. I think it is a safe swap (as you confirm) but my question is -- what do I gain? Is it worth it? Butt dyno results?

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Last edited by dmfdmf; 08-31-2019 at 01:53 AM.
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post #8 of 13 Old 08-31-2019, 06:07 AM
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post #9 of 13 Old 08-31-2019, 09:49 AM
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There is plenty of used newer SV parts on fleabay right now.

Found all 4 cams on there for around $300 bucks. OEM price is around $211 EACH.

Even found the whole motor for around $800 shipped.
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Last edited by D.T.; 08-31-2019 at 09:57 AM.
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post #10 of 13 Old 08-31-2019, 09:59 AM
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Quote:
Originally Posted by Jimding View Post
Be interesting to see full specs, lift, duration, overlap, along with installed timing. If it breaths significantly better, maybe need to reflash the ECU. And move to a higher grade of gas, perhaps, if combustion pressures are up. Maybe better valve springs as well.

Would have thought that an upgraded intake cam would yield better performance gains than the exhaust.

APE has some specs on Suzuki stuff...

https://www.aperaceparts.com/tech.html

Specifications: 2017 Suzuki SV650

2012 Suzuki DL650AL2, over 45k miles already!
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