srx cylinders

[02srx]

hi .can anyone tell me what is different about 00-02 srx cylinders and heads compared to 98-99 cylinders and heads thanks

 

[mrviper700]

the porting is a little hotter on the 2000-02 and the heads are tighter, meaning, the 98-99 have lower compression, and not quite as good of port timing.

 

[02srx]

thanks mrviper700 will the 98-99 work for a big bore on my 02 thanks

 

[mrviper700]

sure,just port them to match the new big bore. If you just big bore it and dont do anything with the port timing, the gain is not noticeable.

 

[02srx]

mrviper700 cpr should do this with big bore right thanks

 

[Junior]

ya jeff does some porting with his bigbores.

since you're porting anyways it doesn't matter what year you use, and the 98-99 stuff can be brought up to 00+ spec's easy enough.

 

[02srx]

thanks junior do you know how the power on jeffs big bore

 

[mrviper700]

low 160's trail ,race is 168 I think???, call him (cpr)he'll tell ya.

 

[Junior]

that sounds about right to me, that's both on jeff's dyno tho, which is pretty conservative.

 

[yamaholic22]

so you think it really might be stronger than that? Like jeff reads them low?

 

[cacsrx1]

My CPR trail 780 is an a$$ ripper.

 

[mountain_mod_viper]

cacsrx1,
How is the reliability of the 780? I assume this is the kit that uses the 72.9mm wisecos. Did Jeff drill the dimples in the pistons (oil retention dimples)? I'm planning on doing a kit that uses these same pistons.

 

[cacsrx1]

No problems whatsoever, other than I had to add a ton of weight to the clutch (ha,ha)

 

[02srx]

cacsrx1 what was the jetting he recommended and what clutching are you using mine is a 02 thanks

 

[cacsrx1]

I think he says stock jetting, ( Im a little fatter, I can lean it out with the Variflo). Im using HCs with alot of weight in the tip and heel, middle empty, 51-43 in the back with a green spring.Turns 8400 and creeps to 8500.

 

[Mac]

I think he says stock jetting, ( Im a little fatter, I can lean it out with the Variflo). Im using HCs with alot of weight in the tip and heel, middle empty, 51-43 in the back with a green spring.Turns 8400 and creeps to 8500.

cacsrx1 are you sure you have Simons big bore. Some things don't add up. Simons kit runs 9300 rpm not 8400. Jetting is not stock either. And 15 miles to the gallon gas mileage is better than stock. Please share your jetting specs. --mac--

 

[pro116]

Mac the srx big bore's run 8400trpm's your thinking of the viper

 

[Mac]

Sorry but I couldnt contain myself

Your right I am thinking Viper. Sorry guys. I am having trouble with 15 miles to the gallon though. I have run over 4000 big bore miles with my Viper. Mostly Quebec touring 250 miles a day. I run a tour buddy 2 1/2 extra gallons and my mileage is nasty. No better than eight mpg. The smile on my face does last for quite a while!!

 

[yamaholic22]

wow that is a little rough on the mileage. Gotta be because of the crazy viper timing, lot of extra fuel compensation

 

[cacsrx1]

Yes I have a Simons (trail)bigbore, it is supposed to run 8500, and it gets very good gasmilage.