IQR 09 600 converted 800 setup help

[PR Performance]

I have a carls cycle 600 race engine with the 800 top end, with a neils pipe, I am trying to find some help with clutching and possible gearing with a 136" x 1.75" track. Any setup for 8000 ft and up, and also for 0-1000 ft.
I did some testing late last spring and found somethings, I just doesn't feel that I am pulling the power that I should. Any help would be great.
Thanks

 

[MNSLEDNECK56308]

Is the carls 600 race motor out of an IQR or RMK?

 

[PR Performance]

It is the 600 IQR race engine with 800 top end. It seems that this motor should pull more than 10-64g weights, I have 10-66 and I can not get even 8000rpm, I had those in with the exact race setup from an 09 racer. Just trying to get more info so when we start riding again, I don't spend the first month trying to get it setup.

 

[autolodge]

It is the 600 IQR race engine with 800 top end. It seems that this motor should pull more than 10-64g weights, I have 10-66 and I can not get even 8000rpm, I had those in with the exact race setup from an 09 racer. Just trying to get more info so when we start riding again, I don't spend the first month trying to get it setup.

How's your jetting? Have you checked you piston wash? IQr's are notoriously fat. What primary spring are you running? Also, on HCS, there is a whole thread on jetting and clutching that motor.

 

[PR Performance]

I was down to 430 with outside temp about 35 degrees and piston wash was good, and egts never went over 1000 I was running almond red spring with 10-66 wts, secondary was stock race setup. What is HCS or give me the link to find it that would be helpful. I really think this motor has potential once I get it dialed in, Also thing about having it ported to add a little more to it.

 

[2002prox800]

www.hardcoresledder.com

 

[PR Performance]

Do you remember what it was under in HCS, I did some looking and could not find it. If you could give me some more info on it would be great.

 

[skidoojames151]

if your egt's never got above 1000...that may be your problem

 

[IQRIDR]

The stock race helix isn't a good helix for anything but racing IMO. Yeah, it'll let you pull your target RPMS on flat hard ground but head up a hill or hit some powder and it falls on its face, wont backshift for ****. That's been my experience. Switch it out to something a little more mountain friendly.

As far as your EGTs never going over 1000, you should be shooting for around 1100-1250 depending on pistons and weather. Either your sensors are going bad or for some reason you are really fat. You should probably be running around 440-480 jets around sea level but I dont know about the high elevation. around 66 grams of weight sounds right too.

 

[skidoojames151]

yea get er running in the 1150 range and that will help a whole lot

 

[Clarke673]

The stock race helix isn't a good helix for anything but racing IMO. Yeah, it'll let you pull your target RPMS on flat hard ground but head up a hill or hit some powder and it falls on its face, wont backshift for ****. That's been my experience. Switch it out to something a little more mountain friendly.

As far as your EGTs never going over 1000, you should be shooting for around 1100-1250 depending on pistons and weather. Either your sensors are going bad or for some reason you are really fat. You should probably be running around 440-480 jets around sea level but I dont know about the high elevation. around 66 grams of weight sounds right too.

At 8000 feet i am running 360-330 depending on temp but thats on a VES. Not sure what carbs you have, but 480 seems a bit lean for an 800 at sea level. In spring at 6000 ft i was up to 420-400's.

 

[IQRIDR]

At 8000 feet i am running 360-330 depending on temp but thats on a VES. Not sure what carbs you have, but 480 seems a bit lean for an 800 at sea level. In spring at 6000 ft i was up to 420-400's.

Stock 40mm carbs. Stock jetting for an 800 ves at seal level was 490 and was very rich. I ran 420's through 440's at 4000-6000 ft. Plugs and wash told me it was all good.

 

[PR Performance]

This motor is the new 600 long rod motor with the cfi 800 topend on it, it uses the 40mm race carbs and timing. At sea level I started at about 470s at 35 degrees, I was down to 440s, it wasnt bad except for about mid throttle, it would clean out at wide open, but my egt's would not hardly get over 1000. I am running a sinlge pipe from neils power pipes. I was told to keep my egts below 1200 on a single. I have tried some different secondary setups at sea level that didn't work to bad. If you want corner to corner trail setup the race setup is pretty close, I just need to drop my primary weights to 10-64 from 66. I have also tried a 64-40 .46 helix with the purple team spring, dont remember exactly what rate it was, but it is what I was told to run at 9000 feet. These are just some of the things I tried late in the year once I got my motor in. Carls cycle thinks that this motor should pull a 10-68, It will not pull that in an IQR with a 136" track. I am just trying to get some feedback from others that have had this motor for more options so when I do get back out west I am ready to ride and not tune the whole time.