Pretty sweet machine. Currently my bike has a holes shot stage 2 with header. It’s fun but I’m looking for more power. 20 more horsepower would be nice. What’s the best bang for the buck??? Cams and compression ?
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More power 1250.
- Thread starter NZSpokes
- Start date
Yes, the above dyno is with cams, compression, and some headwork. Even without the headwork you can be at 145 rwp easy.
lets say i go 12:1 compresssion, yoshi cams, some minor porting, could I be close to 150whp? im not sure i wanna ditch the stock throttle bodies yet but i know a 1255cc motor breathing through 36mm bodies isnt helping the cause.
that looks really good. Do you have any people that you recommend for porting? I would really hate to send my head off and have it hacked up.
did you mill the head for compression or change pistons?
how much did you mill to go from 10.5:1 to 12:1?
I milled the head 0,7 mm and 0,1 the top off the cylinder blocks. For yoshimura camshaft it is should be ok. On my friends bandit they went more, 1mm on head and 0,2 on the block, but with high duration 254/1mm intake camshaft.
cool where did he get his cam?
oh ok. are there any gains to be has from the exhaust cam? wondering if I just had the intake cam ground to a 244-248 duration.
Yes you need to ground the exhaust as it is very very small. Yoshi exhaust is 220 duration 7,4mm lift so something about there, no more than 224. Intake can be regrind up to 8,8mm lift. That seems to be the limit. Yoshi intake is 234/ 8,8 lift. About intake duration you can compare the 2 dyno.
Of course they are different days with quite different temperatures but you can get an idea. The first is intake 254/8,8mm exhaust 220/7,2mm , 1,2mm shaved head/block for compression and head work. The second is yoshi cams, 0,7mm shaved head. Both bikes used same header and ecu hacked. As you see first one is much better at high rpm about the same middle and a little worse at low.
Of course they are different days with quite different temperatures but you can get an idea. The first is intake 254/8,8mm exhaust 220/7,2mm , 1,2mm shaved head/block for compression and head work. The second is yoshi cams, 0,7mm shaved head. Both bikes used same header and ecu hacked. As you see first one is much better at high rpm about the same middle and a little worse at low.
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are you referencing the dyno graph above?
im looking at getting a set done by webb. trying to decide on the duration. Hows yours coming along?
whats your best run to date?
My best run is 160,9 rwp. That is with my previous header and yoshimura inlet camshaft in a quite low temperature.
In the dyno run below green line is the same set up as above but with 36 degree temperature. As you can see there is a 5 hp difference. The yellow line is with my second header, 3 more hp on top.
I still need to dyno it with the new camshaft off 255 duration. I Believe i have got about 4-5 more hp.
In the dyno run below green line is the same set up as above but with 36 degree temperature. As you can see there is a 5 hp difference. The yellow line is with my second header, 3 more hp on top.
I still need to dyno it with the new camshaft off 255 duration. I Believe i have got about 4-5 more hp.
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you should be mucher higher with that large cam?
As i mentioned above in a good dyno day i expect about 166-168 hp
do you think youve reached max hp out of the bandit?
when do you think the stock 36mm bodies start holding back power?