Topic: Problem revving out in 5th

[Retro Rocket]

sweet,ive been dying to embarrass a 750 with my 550!

I'll fix that for you Dave....

[dave500]

i withdraw that comment mick!!any chance that russ might have the wrong head or pistons to give such a low compression figure and the power loss?

[BIGRUSS58]

i withdraw that comment mick!!any chance that russ might have the wrong head or pistons to give such a low compression figure and the power loss?

I WAS THINKING MAYBE IT SAT FOR LONG TIME before i bought it and the valves on one cylinder got moisture in and went rusty and now that valve not seating properly as one pot is going to be open

cheers russ

[dave500]

oh ok i thought it was a rebuilt engine aswell?whats the longest youve ridden it for?

[BIGRUSS58]

oh ok i thought it was a rebuilt engine aswell?whats the longest youve ridden it for?

i finished putting it together about a year ago . done a few 300 mile days and few of 100 miles days ridden it a bout 2000miles all up in 12 months

[dave500]

no worries,we will have a look this weekend.

[LesterPiglet]

Do you have oversize tyres? As the front wheel rotates at higher speeds the tyre will grow until it rubs  the front fender.

This notion got me out of bed early. 

[BIGRUSS58]

Do you have oversize tyres? As the front wheel rotates at higher speeds the tyre will grow until it rubs  the front fender.

This notion got me out of bed early. 

no mate you can go back to bed now

[BIGRUSS58]

Do you have oversize tyres? As the front wheel rotates at higher speeds the tyre will grow until it rubs  the front fender.

This notion got me out of bed early. 

no mate you can go back to bed now
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for interest sake to the guys that helped me , i put my bike on the dyno today
the speedo and tacho are right and it only has 42 hp at the rear wheels ,cause we think  being 341 pipes making it constipated  out and poor airflow in at the carby end
going to muck around for a few days  a try a few things
everything that i did was spot on
correct timing / jet size / air idle was a little out /valve clearances correct

any one want to buy a set of brand new 341 pipes done 500miles i bet not

[BIGRUSS58]

no worries,we will have a look this weekend.

for interest sake to the guys that helped me , i put my bike on the dyno today
the speedo and tacho are right and it only has 42 hp at the rear wheels ,cause we think  being 341 pipes making it constipated  out and poor airflow in at the carby end
going to muck around for a few days  a try a few things
everything that i did was spot on
correct timing / jet size / air idle was a little out /valve clearances correct

any one want to buy a set of brand new 341 pipes done 500miles i bet not

[BIGRUSS58]

The clutch isn't slipping with that load is it?

Then it would redline, but not accelerate.

Yeah, I didn't see anything pertaining to rpm, only speed and with the load of 5th that could cause slippage.

for interest sake to the guys that helped me , i put my bike on the dyno today
the speedo and tacho are right and it only has 42 hp at the rear wheels ,cause we think  being 341 pipes making it constipated  out and poor airflow in at the carby end
going to muck around for a few days  a try a few things
everything that i did was spot on
correct timing / jet size / air idle was a little out /valve clearances correct

any one want to buy a set of brand new 341 pipes done 500miles i bet not

[dave500]

i dont like like your 130 compression.,im not too keen on your 42 anemic horses either russ!are the other missing ones at the melbourne cup?

[BIGRUSS58]

The clutch isn't slipping with that load is it?

Then it would redline, but not accelerate.

Yeah, I didn't see anything pertaining to rpm, only speed and with the load of 5th that could cause slippage.

for interest sake to the guys that helped me , i put my bike on the dyno today
the speedo and tacho are right and it only has 42 hp at the rear wheels ,cause we think  being 341 pipes making it constipated  out and poor airflow in at the carby end
going to muck around for a few days  a try a few things
everything that i did was spot on
correct timing / jet size / air idle was a little out /valve clearances correct

any one want to buy a set of brand new 341 pipes done 500miles i bet not


i checked all the data and a stock k4 engine puts out 41 hp at the rear wheel , pretty sad hey

[dave500]

youve gotta convert the jap ones to fair dinkum aussie ones russ.

[dave500]

will 42 "rain lovers" beat 42 "phar laps"?