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Post by moretime on Jun 22, 2022 8:03:59 GMT
morning,im trying to get a bit more top speed out of my P2 engine, any ideas other than fitting a kit to it ?
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Post by adrian on Jun 22, 2022 19:54:47 GMT
Big box touring exhaust, drilled airfilter and rejet the carb
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Post by ironsloth on Jun 22, 2022 20:25:53 GMT
Put down that bacon sarnie…
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Post by adrian on Jun 22, 2022 21:21:07 GMT
Put down that bacon sarnie… 🤣🤣🤣🤣🤣🤣 lucky I am same weight as I was 40 years ago 😄 |
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Post by moretime on Jun 23, 2022 19:48:44 GMT
cheers, its got a site plus but ive never drilled the airfilter, what jet would need upgrading by the way
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Post by adrian on Jun 24, 2022 13:10:54 GMT
cheers, its got a site plus but ive never drilled the airfilter, what jet would need upgrading by the way I had a sito exhaust and when I fell apart, changed to bgm big box and noticed an improvement straight away. Jetting, what jets do you have at the moment 🤔 |
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Post by moretime on Jun 24, 2022 13:31:01 GMT
I'm going to take the carb apart when my carb cleaner turns up so I'll have a look
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Post by moretime on Jun 24, 2022 16:57:55 GMT
I've had a look at the Bgm big box exhaust, VE-UK have them for £149 But they say only for tuned engines not standard, that's given me the arse to be honest
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Post by ironsloth on Jun 24, 2022 17:17:05 GMT
Any exhaust over standard can be used, as long as the jetting is right.
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Post by moretime on Jun 24, 2022 17:58:46 GMT
my bad, its the bgm big box sport that's not suitable for standard engines, they sell the bgm big box touring which is suitable, I didn't realise their were 2 different options
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Post by moretime on Jun 25, 2022 16:26:02 GMT
ok so ive stripped and cleaned the carb, it had a 160 jet,something else with BE3 stamped on and another jet with 120 on, ive had this bike running like this without removing or even touching the carb for 13 years and it's done loads of motorway mileage, my concern is it seizing on a long run
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Post by adrian on Jun 26, 2022 17:23:57 GMT
Of it isn't broken, don't fix it 👍
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Post by gpowell on Jun 26, 2022 18:27:17 GMT
Standard barrels can be mildly tuned. Ralph Saxelby and Harry Barlow did them. I have had both and they were very good.
The advent of the performance box pipes has added a bit more to this.
Stage 4 tune barrel and open up inlet windows in the piston.
Match box and carb
SIP Road 2 pipe
Drill air filter
SIP fast flow tap
Upjet main and pilot
Plus ideally increase the inlet timing (but that means crank out)
Ive run my timing at IT setting (px) 21 degree not A (p2) 23 degree.
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