Big Bore Kit Installed, Motor Wont Start

[Bigger the Better]

You may just want to buy another gasket set too.

http://www.davesmotors.com/s.nl/c.885035/n.1/it.A/id.4153/.f

 

[Bigger the Better]

Use the specs too:
https://www.largescaleforums.com/showpost.php?p=9272&postcount=2

 

[sperera]

whats the latest Kaus? Hope she's running for you mate.

 

[KauseKaos]

whats the latest Kaus? Hope she's running for you mate.

Gonna tear it down and build it to the specs of your big bore kit. And pray for the best. Lol

 

[sperera]

is all that your missing is the stuffer stroked crank? Or u gonna go the 668 and billet intake as well?

 

[KauseKaos]

is all that your missing is the stuffer stroked crank? Or u gonna go the 668 and billet intake as well?

im gonna stick with the 813. No billet intake. so yeah just the crank new gaskets and bearing and oil seals.

 

[KauseKaos]

I've about had it with this dam motor. It still wont fire. I'm ready to toss it.

 

[sperera]

bugger, did you get the big bore kit?

maybe try another carb?

U using a new plug?

 

[KauseKaos]

i'm on a 3rd different carb and tried many different new plugs. I'm lost. I just didnt get the 2mm stuffed crank.

 

[Rick C]

I know it sounds stupid but, are you sure it was put together right? Just in case look this over: Rebuild a 2 stroke Baja engine start to finish.

great guide but how many times does he say

''go ahead'' lol

 

[Trip]

Kaos, where are you located? I was told you were in MI...

 

[KauseKaos]

Nah I'm in new york. And rick I've watched vids and all. I really don't see how I could have installed it wrong. I just don't get it. I've taken it all apart more then 3 times now.

I should have never touched it in the first place. It was already doin 65. Just wanted more off the line and gears weren't cuttin it.

 

[Rick C]

Nah I'm in new york. And rick I've watched vids and all. I really don't see how I could have installed it wrong. I just don't get it. I've taken it all apart more then 3 times now.

I should have never touched it in the first place. It was already doin 65. Just wanted more off the line and gears weren't cuttin it.

i am looking at doing the 30.5 upgrade also but have seen you get the 2 mm stroker crank in some kits too, and you have not installed it? so i read, not sure if this is necessary but i would think it would be (so you get more compression) thees nothing really that can go wrong on the build only the piston in the wrong way round,

first of all id check compression, a crude way of doing this would be to put your thumb over the spark plug hole and pull the pull start,

have you done a squish test?

have you tried with standard carb?

have you tried starting wit easy start?

 

[Trebor]

just a thought if you bought this as a kit...... with the +2mm crank

and not fitted it ....option1 has the head inside been machined for the correct

clearance....option 2 are you using just a thicker barrel gasket....

option 3 or did you rebuild using the standard thin barrel gasket......

if option 1 or 2 then your compression/squish will be way out out:boat:

 

[KauseKaos]

my kit didnt come with one. And from what I understand it wasnt needed. I thought about buying it but to spend another 75 bucks on this motor and if doesn't start i'll be pissed.

 

[Rick C]

bump my question

 

[KauseKaos]

bump my question

Yes sir tried all 3

 

[Rick C]

Yes sir tried all 3

did you get any compression?

 

[KauseKaos]

got sick of it took it off and put the stock head back on. It started right away. Maybe it was the headkit.

 

[wagon]

sounds like u r having a mare!!!!! Renbarr is struggleing at mo as well trying to get his to fire up....Maybe there is a dodgy batch out there at the mo.....??????????? good luck anyway....don't let it get u down mate....If at first u don't succeed an all that.......