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funindamud
07-20-2009, 12:45 AM
ok my motor blew up a few months ago and i think it was from poor quality cylinder... what do you all think?
BuggyMaster
07-20-2009, 12:54 AM
That looks like an oiling failure. What were you doing when it went and how did it go?
funindamud
07-20-2009, 01:06 AM
crusing down the field around 6000 RPM.... and it made a pop and it was blowing white smoke... its an anti diesel :)
24evanwilson
07-20-2009, 02:04 AM
i agree with buggymaster
funindamud
07-20-2009, 10:49 AM
i am running 15-40 lucas oil synthetic
BuggyMaster
07-20-2009, 12:51 PM
I'd say its time for that big bore kit.
funindamud
07-20-2009, 01:29 PM
that was the big bore kit...
BuggyMaster
07-20-2009, 03:15 PM
DAMN! Hey when it was running, how much difference did it make power wise between stock and big bore kit as far as seat of the pants difference?
funindamud
07-20-2009, 07:42 PM
it acted like it gave you an extra 1/4 throttle... if you can understand what i mean.. it had more "seat of the pants" feel... in combination with the 170 head and 9 gram rollers and everythine else in my sig it wayy better than the stock motor...
BuggyMaster
07-21-2009, 09:52 PM
I'm really tempted to do this.
funindamud
07-21-2009, 10:22 PM
its worth it... as long as you do it RITE!!!! if you need any help i can walk you through it... you dont even haft to send it to a machine shop... all the special tools you need is a dye grinder and a stator removal tool...
BuggyMaster
07-21-2009, 10:32 PM
So you can get away with just grinding the bore to fit the sleeve into it?
funindamud
07-21-2009, 10:38 PM
yep... as long as you dont grind too much out of it... i took it to my machine shop and thats what they said to do... it really suprized me...
BuggyMaster
07-21-2009, 10:40 PM
I am yet to have the head off of one of these, are you able to do the grinding and just stuff a rag in the case to keep the garbage out?
24evanwilson
07-21-2009, 10:47 PM
i didn't know that you could do that
funindamud
07-21-2009, 10:47 PM
you could but the rite way is to take the motor COMPLETLY apart and split the case and take all the internals out of it then slap the empty cases back together and then grind the block... just make shure you got the new cylinder their before you attemp the grinding... i know some one that did this...
BuggyMaster
07-21-2009, 11:37 PM
How much grinding has to be done? I mean..is it a considerable amount or just a tad?
funindamud
07-21-2009, 11:48 PM
its not much... just a tad... a little more than a 1/16 but not much...
24evanwilson
07-22-2009, 11:04 AM
i might try that !
funindamud
07-22-2009, 03:37 PM
heres some pics of the diffrences
24evanwilson
07-22-2009, 03:42 PM
cooooool!
funindamud
07-22-2009, 11:34 PM
ok buggy master so are you gonna do it? if you are i wil go and take pics of a step by step installation of the big bore kit....
BuggyMaster
07-23-2009, 09:12 PM
wow! I had no idea that there was that much difference between them! You should definately be feeling the torque difference. Sounds like a great mod for the helix.
24evanwilson
07-23-2009, 09:15 PM
uh-hu if you don t mess up......
funindamud
07-23-2009, 09:38 PM
uh-hu if you don t mess up......

whats that sopposed to mean?
BuggyMaster
07-23-2009, 09:41 PM
I'm assuming that on the bottom of those cyliders there is a protruding sleeve, correct? And this is what the machining needs to be done for?
funindamud
07-23-2009, 09:48 PM
yes their is a protruding sleeve (look in first pic of this section) the reason that the case needs to be machined is because the diameter is diffrent... you go from a 58mm diameter (150cc) to a 61mm (170cc) or a 62mm(180cc) cylinder... depending on which size big bore kit you buy....
24evanwilson
07-23-2009, 09:51 PM
now thats awesome!