engine problems?

[blowit]

uhm not sure what kind of compresion tester it is....dad got it form sears.... but i didnt hold the throttle open.....i guess this will go with out saying but ima newbie not to riding but to working on the rides.

 

 

 

Well leaving the throttle closed really won't affect the pressure much, just how long it takes to get there. If you kicked until it would not go higher, you have valid numbers from that gauge and, right or wrong, a 50psi variance is too much. We tear our customers down at 7-10lb variance here. You need to know what is going on and a new bore or set of pistons is likely in your future. No biggy, simple to do. Grab a manual and a 6 pack (or a case if needed) and enjoy.

 

 

Brandon

[brian25]

the compresion tester is an actron......i toook the test agian i have 100 one the left and 95 on the right.

[brian25]

o ok didnt see that reply......was hopin i wouldnt have to do that but new top end it is.

 

also a lil inof for ppl who order stuff off the net someone got my account number from 1 of the three websites

-rockymountain

-toomey racing

-or musicians friend

 

thats the last three places ive ordered from and so far ive been taken for 300.

[brian25]

ok just took the head off and couple of ?

- where do i get the 10000 o rings for the paul turner head, will any o ring kit for any cool head/power head work?

-how do i know what cc domes i have

-how do i know if it needs boring, there is a noticable amount of free play between the piston and cylinder on both sides

- also how do i know if it has already been bored

-finally where the reeds go in the cylinder looks ruff, has ridges, normal or not?

thnx alot guys! for ur time

Edited May 5, 2007 by brian25

[dajogejr]

I honestly don't know if a Paul Turner head takes the same O Rings. I know Dave Noss's head and the Pro Design one share O ring sizes.

Call or PM Dave Noss (DLNOSS) and see what he says.

 

Put a spark plug in the domes, flip them upside down, fill then with water from a graduated cup...see how much water they hold. That's the cc of the dome...normally, it is stamped on the dome, though.

 

Any machine shop can measure the bore, tell you what it's at...and what size pistons to use....

If the bore is larger than 64mm, it's been bored before most likely (sometimes you can clean carbon off the top of the piston and get numbers, too...)

 

If you can post a pic of the reeds...we can help better.

 

I've ordered from Toomey and RMATV...never had a problem personally...

[brian25]

thats the three last places i ordered from not trying to down em or anything, just saying watch it. cuz ive order from rmatv couple times b4 no probs. fomr now on i will get a pre paid visa.....

 

and thnx for the help ill take pics 2marow

[brian25]

heres the intake

[brian25]

another

[brian25]

i have 20 cc domes i found it on them, and im wanting to stay at pump gas so if i bore will it need higher octane?

[letsgetthisdone]

That looks normal too me. Looks like you gat a set of ported cylinders too.

[Handyman]

guess this will go with out saying but ima newbie not to riding but to working on the rides.

 

Don't feel bad about not knowing. Many people have been in your shoes before, me included...everyone has to start somewhere. And never worry about asking a question, that's why we're here...to help ALL banshee owners save money when they can by having the knowledge and help from fellow shee owners. Welcome to the addiction

 

i have 20 cc domes i found it on them, and im wanting to stay at pump gas so if i bore will it need higher octane?

 

Once you get everything put back together do a compression check. if you have 130-160psi you can can regular 93 octane pump gas, 160-170psi you can either use 50/50 mix of 93oct pump gas and race or striaght pump gas. 170psi is nothing but race gas, preferably 110 octane.

[brian25]

ive had it back together for a while, have 180 psi. sound right? with .02 over and 20 cc domes? i do have a actron copm. tester..so might be off. now i gotta get my carbs jetted right....i have 34 mm pj's ran ok but i put my stocker with a k&N jet kit on and wow, so much more botttom kinda bogs as soon as i touch the throttle, ... will this be ok to ride on for a while. because ima buy new carbs and also i have some t5's on the way, then ima take it to a local man and have him dail everything in. another question is what carbs should i get, been lookin at some oko30 mm, or some 28 mm PWK Keihin's, or the 28 mm oko's ill prolly just ride trails and ocasionally a track mods are .2 over, PT power head,boyesen reeds on stock cages(prolly get some v3's) will have t5's and a k&n with no lid.

 

race gas where do i gte it? a local place has it in 55 gallon drums for like 264 i think, if i buy that much would i need to stabalize it? or will it be ok to set for a while?

Edited May 27, 2007 by brian25

[brian25]

i also used stiock cylinders i had. so there is no porting

[blowit]

Don't feel bad about not knowing. Many people have been in your shoes before, me included...everyone has to start somewhere. And never worry about asking a question, that's why we're here...to help ALL banshee owners save money when they can by having the knowledge and help from fellow shee owners. Welcome to the addiction

Once you get everything put back together do a compression check. if you have 130-160psi you can can regular 93 octane pump gas, 160-170psi you can either use 50/50 mix of 93oct pump gas and race or striaght pump gas. 170psi is nothing but race gas, preferably 110 octane.

 

 

I would have to disagree one the fuel selection. The quoted 180psi may be just fine on pump fuels. Give it a run and if you don't have audible knock, things should be fine. Make sure to keep jetting on. Lean jetting can cause detonation. I have a stocker in here right now that has run for years with 19s on stock porting and 91oct. The roughness on the intakes are fine. They are rough from the factory and looks like someone tried to clean the castings a bit but no worries and no need to jet for that. Not enough to make a difference.

 

Brandon