MotoHouston.com MotoHouston.com
Register Members List Member Map Media Calendar Garage Forum Home Mark Forums Read

Go Back   MotoHouston.com > Technical > Performance and Modifications
Forgot info?

Welcome to MotoHouston.com! You are currently viewing our forums as a guest which gives you limited access to the community. By joining our free community you will have access to great discounts from our sponsors, the ability to post topics, communicate privately with other members, respond to polls, upload content, free email, classifieds, and access many other special features. Registration is fast, simple and absolutely free, join our community!

Register Today!

If you have any problems with the registration process or your account login, please contact us.


Like us on Facebook! Regular shirt GIVEAWAYS and more

Advertisement

Reply
Share This Thread: 
Subscribe to this Thread Thread Tools
Old 12-04-2007, 11:29 AM   #1
GsxrRcr369
Senior Member
 
GsxrRcr369's Avatar
 
Join Date: Nov 2005
Location: Baytown, TX
Feedback Rating: (0)
Posts: 1,778

Experience: 10+ years

Bike(s):
2014 CRF 50 (#1)
2014 CRF 50 (#2)
Schwinn XS Pro Modified 2







I have a cam question....

Quote:
01-05 you need to start with some good cams. a 750 is a good motor but very under cammed for the rpms that it runs. The 750 responds very well to cams. I put I 1000 intake cam in 3 750's and I would move the stock 750 intake cam over to the exhaust side.
This set up is good for 13hp and good from 5,000rpm up to redline. Below 5,000 it's a little slugish. I degrre mine to 107/109 .. Thats a start. And will get you in the mid 9s no problem
I read this on another web site i frequent and was wondering if it would really work. Does anyone know if this is possible and would actually show good results???
GsxrRcr369 is online now   Reply With Quote
Similar Topics
Thread Thread Starter Forum Replies Last Post
my new gopro cam TexasCBR1000rr General Discussion (Moto Related) 19 04-21-2011 08:48 AM
Dash Cam DOV General Discussion (Moto Related) 17 03-27-2008 12:43 PM
Bike Cam's slo_rdr General Discussion (Moto Related) 29 12-27-2007 01:47 PM
Cam question? 90 5.0 Performance and Modifications 5 11-30-2007 04:15 PM
Advertisement
Old 12-04-2007, 11:47 AM   #2
level5
moving chicane
 
Join Date: Aug 2006
Feedback Rating: (0)
Posts: 5,825












That's an interesting idea and I am sure it will work only if you can time it right.
level5 is offline   Reply With Quote
Old 12-04-2007, 11:49 AM   #3
GsxrRcr369
Senior Member
 
GsxrRcr369's Avatar
 
Join Date: Nov 2005
Location: Baytown, TX
Feedback Rating: (0)
Posts: 1,778

Experience: 10+ years

Bike(s):
2014 CRF 50 (#1)
2014 CRF 50 (#2)
Schwinn XS Pro Modified 2







Ok i have been told it has and will work now its just me figuring it all out. Only question is if i try to do it can i get it done before the 16th now. I wonder how much it would cost for labor on a project like this???
GsxrRcr369 is online now   Reply With Quote
Old 12-04-2007, 11:51 AM   #4
Patrick
Motorcycles Unlimited
 
Join Date: Jun 2005
Location: Houston
Feedback Rating: (2)
Posts: 16,367

Experience: 10+ years
Trackdays: 10+

Bike(s):
'14 Speed Triple R, '82 CB900F, '13 Streetglide






I've done it to quite a few 750's.
13 rwhp is VERY optimistic, mor elike 4-5 rwhp after some tuning.

You'll need the cams, some adjustable sprockets and quite a bit of time on your hands.
__________________
Call or PM for the BEST PRICES in Houston for PARTS and ACCESSORIES.
MAKE SURE TO MENTION YOU'RE ON MH TO GET THE BEST PRICE!

NEED GEAR? We have a great selection in stock but if we need to order it we GUARANTEE FIT!
Where Houston riders go to have their bikes worked on, done right the first time!


muad

1964 FM 1960 West
Houston, TX 77090
Hours: Tues.-Fri. 9:30-6:00 Sat. 9-5:30
www.motorcycles-unlimited.com
http://www.facebook.com/motorcyclesunlimited
e-mail: patrick@motorcycles-unlimited.com
Patrick is offline   Reply With Quote
Old 12-04-2007, 11:53 AM   #5
GsxrRcr369
Senior Member
 
GsxrRcr369's Avatar
 
Join Date: Nov 2005
Location: Baytown, TX
Feedback Rating: (0)
Posts: 1,778

Experience: 10+ years

Bike(s):
2014 CRF 50 (#1)
2014 CRF 50 (#2)
Schwinn XS Pro Modified 2







Patrick would you happen to be able to get your hands on one of these cams and if not do you know about how much ti would run for the install and tune?? Or how hard of a project is it??? And would the same thing work for a 600???
GsxrRcr369 is online now   Reply With Quote
Old 12-04-2007, 12:05 PM   #6
Patrick
Motorcycles Unlimited
 
Join Date: Jun 2005
Location: Houston
Feedback Rating: (2)
Posts: 16,367

Experience: 10+ years
Trackdays: 10+

Bike(s):
'14 Speed Triple R, '82 CB900F, '13 Streetglide






You'll need to install the cams and check valve clearance as well as valve to piston clearance.

The cams will have to come back out to adjust valve clearance.

Hopefully you'll only have to do this once, but sometimes the valve clearance is so tight you can't get a feeler gauge. In this case you'll have to guess with a smaller shim, reinstall the cams and recheck clearances.
More than likely they'll need to come out again.

After you've got the valve clearances done, you'll need to degree the cams and as a safety precaution, recheck VTP clearance.

While you're there, install a manual CCT and synch the throttle bodies for the changes you've made.

Lastly you will definitely have to get a custom tune done on a dyno.

Expect to spend in the neighborhood of $1100.00 to $1400.00 parts and labor for everything including the dyno time.

It's a lot of expense for 4-5 rwhp, and you will definitely lose sme mid range performance, but only you can decide if it you need the extra power.

IMO, before you do all of that, I'd make sure you cover a bunch of the basics first.
__________________
Call or PM for the BEST PRICES in Houston for PARTS and ACCESSORIES.
MAKE SURE TO MENTION YOU'RE ON MH TO GET THE BEST PRICE!

NEED GEAR? We have a great selection in stock but if we need to order it we GUARANTEE FIT!
Where Houston riders go to have their bikes worked on, done right the first time!


muad

1964 FM 1960 West
Houston, TX 77090
Hours: Tues.-Fri. 9:30-6:00 Sat. 9-5:30
www.motorcycles-unlimited.com
http://www.facebook.com/motorcyclesunlimited
e-mail: patrick@motorcycles-unlimited.com
Patrick is offline   Reply With Quote
Old 12-05-2007, 12:24 PM   #7
ZXALAN
UR NXT
 
ZXALAN's Avatar
 
Join Date: Mar 2007
Location: League City Tx
Feedback Rating: (1)
Posts: 4,254

Experience: 10+ years

Bike(s):
2000 Turbo-Hayabusa
2013 BMW S1000RR








1 Stock Intake Cam on Intake (don't change)
#12710-39F00 For Exhaust
(This is a Stock Intake for a 01-03 GSXR600)
*Stock spring "ok" if shimmed, GSXR750 springs are better

#2 Web #536 Intake (This is a custom grind for the GSXR)
#12710-39F00 For Exhaust
*GSXR750 Spring "ok" PM Spring/Retainer Kit is better

#3 Web #483 Intake (This is a custom grind)
#13710-35F00 For Exhaust
(This is a stock Intake cam for GSXR750 2000-03)
*PM Spring Kit Required

#4 Race Only Web #45 Intake (Custom Grind)
#12710-35F00 Exhaust
*Must use PM Spring/Retainer Kit
**Must check valve to piston carefully fly cutting of stock pistons likely or use piston kit.


Stock GSXR Cams

YEAR TYPE LIFT
@ 0 LASH DUR
@ .050 AREA
2001-03 600 INT .337" 237^ 28.3
EX .287" 215^ 22.5
2000-03 750 INT .344" 240^ 29.3
EX .287" 215^ 22.5
2001-02 1000 INT .355" 244^ 30.4
EX .314" 220 1/2^ 25.0
2003-04 1000 INT .355" 244^ 30.6
EX .315" 220 1/2^ 25.0

Estimated Best Combination

GSXR600-----------------------GSXR750------------------GSXR1000
750 intake on intake........... 1000 intake on intake.............Stock intake
1000 exhaust on exhaust..... 1000 exhaust on exhaust...... 600 intake on exhaust
__________________

319hp@14lbs(pump gas), 435hp@29lbs(race gas)
Texas Mile Mar 09, 225.906mph, 8.82@168.43 w/1.63 60'-14.5lbs
ZXALAN is offline   Reply With Quote
Old 12-05-2007, 12:43 PM   #8
ZXALAN
UR NXT
 
ZXALAN's Avatar
 
Join Date: Mar 2007
Location: League City Tx
Feedback Rating: (1)
Posts: 4,254

Experience: 10+ years

Bike(s):
2000 Turbo-Hayabusa
2013 BMW S1000RR








Oh and you will not get 13hp from this..... I am with Patric, if you got a solid 5-8hp with a custom tune, I would be suprised. Not worth the trouble honestly.....Considering you could do a 1000 motor swap for $1200-1500 for everything and gain 20-30hp and a ton more tq...

BUT if you wanted to do the cam swap, you could hustle up a used 1000 intake cam cheap, prolly like $50, then you need adjustable sprockets, $150, then have someone degree the cams and shim the valves, probably around $300 labor, finally the custom tune $300......about $800 total for 5-8hp.....
__________________

319hp@14lbs(pump gas), 435hp@29lbs(race gas)
Texas Mile Mar 09, 225.906mph, 8.82@168.43 w/1.63 60'-14.5lbs
ZXALAN is offline   Reply With Quote
Reply


Thread Tools

Advertisement


All times are GMT -5. The time now is 01:22 PM.


MotoHouston.com is not responsible for the content posted by users.
Privacy Policy