G
Guest
Guest
67 vette ?In a heart beat
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Always been the 63 split window that turned me on but I know they don't offer as much performance. Judging by the last Barret Jackson numbers I'm not alone in my lust.
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Low Cost / High Performance GS1100E Head work
- Thread starter posplayr
- Start date
Always been the 63 split window that turned me on but I know they don't offer as much performance. Judging by the last Barret Jackson numbers I'm not alone in my lust.
C
cbxchris
Guest
67 vette ?
I had a 67 vette 427 with tri power. I agree with ya. I have a slightly modified crossfire srt6 that will eat most any muscle car of the era. Amazing what a modern super charged v-6 can do.
J
jwhelan65
Guest
O
Old Colt
Guest
Some people think they are fast, but they do not even know what fast is.
We are all aware of the new stuff out there and this site is not for the new stuff. We are here for vintage Suzukis.
J
jabberjoe87
Guest
GS1100ED Head update
GS1100ED Head update
Wanted to show some of the results of this thread and teh work Terry at headsbikesmopars did
http://www.thegsresources.com/_forum/member.php?u=2120
I sent a bone stock head 24 bolt head (15K miles on it) to Terry to up the horsepower on my GS1100ED. I was planning on an 1168 cc BB kit and wanted to wring a few more horsehower out of the puppy, but not ruin the driveability for the street. I wanted to put out more than a stock 1150, but not turn my bike into a rip snorting monster.
I could have gone 28.5/24mm v.s. just doing the stock 1150 intake valves; I could have gone Web 0.348" lift v.s. the 0.340's ; I could have degreed the cams for 110/110 instead of 105/107 . If I had i would be measuring out a 6" over swing arm as this baby already easily lift the front wheel in 1st and 2nd gear. And that is with SLOW roll ons and NO 1/4 turn throttle. Of course SLOW is relative as redline comes up pretty quick.
Terry went to town to create a wonderful street head. He pushed the CFM up from stock about 78 CFM to about 95 cfm at my usable lift. He used 28mm 1150 intakes, backcut the valves and ported as shown in the pics. Bill (Chef) thought it was an aggressive port (I don't know), but the bike runs great. Idles very strong, pulls very strong and has lots of low end grunt.
Funny thing is Bill and I run near identical bikes. Main differences are the heads and where the cams are degreed. I think we would run pretty close. Of course he has a few pounds on me. One big difference is he is running 150's and now stepped up to 152.5 on his BS36 CV's. I'm running the same DJ kit but my mains are only 145 same BS36 CV's. Both have 1168, 4:1, Pods, Dyna, 0.340 web cams.
I also attached a plot of the flow results that Terry provided. You can see the before (stock head) and after the porting job. There was well over a 20% increase in flow rate. The step up in the intake valve size can be seen at low lift, while the exhaust showed no impact. As the lift exceeds 0.150 you see the affect of the porting on both sides.
Because of the rush to get to the Julian GSXR trip, there was alot of fiddling to get the carbs right (mostly self inflicted). As it turns out the carbs are very close to where Chef (Bill) set them in the first place and the bike runs great. I still need to readjust the valves , balance the carbs and tweak the idle mixture a little but it runs very nice despite lacking final tweaks. After getting back from Julian (when it was not jetted right), I have made a couple of trips up onto Camino Ceilo. This is basically a narrow mountain road of mostly turns at between 15-30 mphs with speeds seldom exceeding 50 mph. Not someplace you want an unpredictable throttle. The bike is very predictable even though it is a 4000 ft climb from sea level. Idles great, instant response and pulls very strong.
(Camino Ceilo = Sky Road in Spanish)
http://blog.seattlepi.com/velocity/archives/134879.asp
Anyway wanted to let everybody know how well the head turned out and thank Terry for putting in the extra effort to make this a such a great head and how drivable the bike remains. Also thans to Chef for going all out to get my bike ready for the Julian trip. My ED has benefited much from just following his configuration.
Jim
GS1100ED Head update
Wanted to show some of the results of this thread and teh work Terry at headsbikesmopars did
http://www.thegsresources.com/_forum/member.php?u=2120
I sent a bone stock head 24 bolt head (15K miles on it) to Terry to up the horsepower on my GS1100ED. I was planning on an 1168 cc BB kit and wanted to wring a few more horsehower out of the puppy, but not ruin the driveability for the street. I wanted to put out more than a stock 1150, but not turn my bike into a rip snorting monster.
I could have gone 28.5/24mm v.s. just doing the stock 1150 intake valves; I could have gone Web 0.348" lift v.s. the 0.340's ; I could have degreed the cams for 110/110 instead of 105/107 . If I had i would be measuring out a 6" over swing arm as this baby already easily lift the front wheel in 1st and 2nd gear. And that is with SLOW roll ons and NO 1/4 turn throttle. Of course SLOW is relative as redline comes up pretty quick.
Terry went to town to create a wonderful street head. He pushed the CFM up from stock about 78 CFM to about 95 cfm at my usable lift. He used 28mm 1150 intakes, backcut the valves and ported as shown in the pics. Bill (Chef) thought it was an aggressive port (I don't know), but the bike runs great. Idles very strong, pulls very strong and has lots of low end grunt.
Funny thing is Bill and I run near identical bikes. Main differences are the heads and where the cams are degreed. I think we would run pretty close. Of course he has a few pounds on me. One big difference is he is running 150's and now stepped up to 152.5 on his BS36 CV's. I'm running the same DJ kit but my mains are only 145 same BS36 CV's. Both have 1168, 4:1, Pods, Dyna, 0.340 web cams.
I also attached a plot of the flow results that Terry provided. You can see the before (stock head) and after the porting job. There was well over a 20% increase in flow rate. The step up in the intake valve size can be seen at low lift, while the exhaust showed no impact. As the lift exceeds 0.150 you see the affect of the porting on both sides.
Because of the rush to get to the Julian GSXR trip, there was alot of fiddling to get the carbs right (mostly self inflicted). As it turns out the carbs are very close to where Chef (Bill) set them in the first place and the bike runs great. I still need to readjust the valves , balance the carbs and tweak the idle mixture a little but it runs very nice despite lacking final tweaks. After getting back from Julian (when it was not jetted right), I have made a couple of trips up onto Camino Ceilo. This is basically a narrow mountain road of mostly turns at between 15-30 mphs with speeds seldom exceeding 50 mph. Not someplace you want an unpredictable throttle. The bike is very predictable even though it is a 4000 ft climb from sea level. Idles great, instant response and pulls very strong.
(Camino Ceilo = Sky Road in Spanish)
http://blog.seattlepi.com/velocity/archives/134879.asp
Anyway wanted to let everybody know how well the head turned out and thank Terry for putting in the extra effort to make this a such a great head and how drivable the bike remains. Also thans to Chef for going all out to get my bike ready for the Julian trip. My ED has benefited much from just following his configuration.
Jim
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G
Guest
Guest
Kudos to Terry!
N
Nicholaschase29
Guest
Here is some more information regarding Terry and his port work. I just got my head back and everything looks great. I would be interested to see a scanned copy of Jim's flow sheet (stock and ported) as it's hard to get an accurate number from your graph.
Here are a few pictures of Terry's work as well as a flow sheet. I still need to clean up the head. Thanks again!
Here are a few pictures of Terry's work as well as a flow sheet. I still need to clean up the head. Thanks again!
K
Katarat
Guest
What the Busa guys dont understand is that they arent old people friendly, you cant ride the damn things. Im 66 3/4, have a bad back and I dont do water in engines or fuel injection. Outside of that you guys have a good Xmas. I may be old but I still like to go fast !
Merry Christmas Wooodman, hope your not getting too much snow. My wife just headed up to Kalispel to see her folks at Swan Lake.
Here is a comparision of the final numbers between Nicholas's head and mine. Mine has the 28mm 1150 backcut valves Nicholas's has stock 27mm back cut stock valves. Terry did some magic pulling out about 99 CFM at 0.35" lift to improve on the high lift performance of the 27mm valve and across the board improvment for the same valve. He said mine was a mild port . Looks like some excellent work you got there Nicholas.
. Looks like some excellent work you got there Nicholas.
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Nicholaschase29
Guest
You can definitely see the improvement of flow down low with the 28mm intakes. In reality our valves are only open up around the .350 range for a fraction of the time that they're open (Jim with .348 webs and me with .355 G4's) so he has more usable flow - a good upgrade with the 28's.
Great work Terry - thanks again!
Jim - what program are you using to make the graphs? Just excel?
Thanks for making the comparison graph. Check your x values with my numbers. He got values at .370 and .4 for me. You have to plot a separate set of X values against my flow numbers.
Thanks,
Nick
Great work Terry - thanks again!
Jim - what program are you using to make the graphs? Just excel?
Thanks for making the comparison graph. Check your x values with my numbers. He got values at .370 and .4 for me. You have to plot a separate set of X values against my flow numbers.
Thanks,
Nick
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Nick,
Just using Excel, I fixed up those couple of data points. I'm using the 0.340's cams not the 0.348's which have much more duration. I also added the stock numbers from my original head. and plotted intakes together and exhaust together. You head seems to have an intake resonance which is boosting the high light CFM. That should work well with a long duration (broad lobe) profile.
Jim
It is springtime so just thought I would bump this thread for anybody thinking about muscling up an 1100/1150. :dancing:
http://www.thegsresources.com/_forum/showthread.php?t=170253
http://www.thegsresources.com/_forum/showthread.php?t=171150
http://www.thegsresources.com/_forum/showthread.php?t=170253
http://www.thegsresources.com/_forum/showthread.php?t=171150
I think were mostly talking about old school 1100/1150 muscle :dancing:
Anybody with a stock 1100 has gotta be thinking about it
R
ronin1166
Guest
My GS project has been static for FAAAAAR too long now.
But I'm getting a little time (and more importantly, spare coin;-) back lately.
Threads like this are giving me teh Major Wood...
IIRC, my DIY port cleanup is roughly 50% complete. Think I'll dig it out and have a look-see this weekend.
Decisions I need to make:
-- Stock or +1 in intake valves? My '83 Kat head has substantial core-shift, lots of undercut at the intake port/valve seat interface. I think +1 would chase it out smooth. But I already have a full set of NOS stock Suzuki valves...
-- Smooth/blend valve guides or not? Don't know how much this influences flow, but valve-stem support is a good thing...
FWIW, my build is similar to some described in this thread:
1166cc, Falicon Supercrank, Web .348 cams, APE springs w/ Ti retainers.
Tractable Street Monster in accordance with Pos' "personality" description.
.
But I'm getting a little time (and more importantly, spare coin;-) back lately.
Threads like this are giving me teh Major Wood...
IIRC, my DIY port cleanup is roughly 50% complete. Think I'll dig it out and have a look-see this weekend.
Decisions I need to make:
-- Stock or +1 in intake valves? My '83 Kat head has substantial core-shift, lots of undercut at the intake port/valve seat interface. I think +1 would chase it out smooth. But I already have a full set of NOS stock Suzuki valves...
-- Smooth/blend valve guides or not? Don't know how much this influences flow, but valve-stem support is a good thing...
FWIW, my build is similar to some described in this thread:
1166cc, Falicon Supercrank, Web .348 cams, APE springs w/ Ti retainers.
Tractable Street Monster in accordance with Pos' "personality" description.
.
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