Timing advance

[CoDean45]

Anybody tried this timing advance? http://cgi.ebay.com/ebaymotors/Parts-Accessories_ATV-Parts-Accessories__Honda-TRX-250R-250-R-High-Performance-Timing-Advance_W0QQitemZ280316263815QQddnZPartsQ20Q26Q20A ccessoriesQQadiZ2869QQddiZ2811QQadnZATVQ20PartsQ20 Q26Q20AccessoriesQQcmdZViewItemQQptZMotors_ATV_Par ts_Accessories?hash=item280316263815&_trksid=p4506.c0.m245&_trkparms=65%3A1|39%3A1|240%3A1318

[Honda 250r 001]

i have not tried that particular one but i have advanced the timing. i could tell a little difference. but then again it takes a huge differnce for me to tell. Worth it if you have everything else. pipe, reeds, carb, porting, stroker, big bore. other wise get the other stuff first.

[CoDean45]

I have a sparks pipe, v force reeds, 38 mm air stryker, 310 cylinder. I am looking to do something to the ignition next.

[Langbolt]

Yes!

I've got one in my 310cc soon to be 330cc big bore.

My Ignition is an '86 which is 19degrees BTDC factory so I ran it with +3 degrees advance.

'87-89 Ignitions are 21 degrees BTDC so they don't need much.

It depends on the fuel you're burning too!

Are you running Pump gas or Race fuel 108octane+ ?

I didn't gain any H.P. when I dyno'd my quad....but it made the same H.P. longer from 7200-8000 rpm.

It made starting easier too!

Always first kick!

I'd say it's well worth the price.

Just be very careful.....too much advance and you'll blow a hole in the top of your piston.
:devil:

[morse250r]

i have the cr ign i picked up 7 hp on the dyno by advanceing it about 7 degrees

heres a dyno sheet of the 2 differnces you can see the 2 there are pros and cons to either way

[jcs003]

looks like you lost a lil' torque with the CR ignition.

[morse250r]

thats a cr on both runs the higher hp is with it advanced

[jcs003]

ic. thanks

[CoDean45]

mine is a 89. I do a lot of woods riding and mx racing. Will the timing advance help me with my type of riding or is it more for drag quads. I run a 50/50 mix of 93 and 110 octane. My compression is around 185. I am currently having my cylinder bored to 73mm. It was 72.5 mm and the compression was 182 so I'm expecting the compression to go up a little with the fresh bore and piston.

[dunatic]

by advancing your timing even by as lil as 3 degrees, you can add more fuel....more fuel = more power