How is this possible!?

hahaha, i am listening to you! i can just see this whole deal going tits up and me being stuck with it, and no bike which means having to cycle to college

 

my mate reckons i have to 10% upjet for a 70, that right?

 

5 to 10 percent

 

that would probably explain why its acting like a twat then.......

the guy who told me that actually got it mixed up at the start and went 15 sizes down on his malossi

 

also you said you used your old 50 cylinder head, did you use new gaskets

 

well... dont laugh....

the head gasket that came was actually too small, so i went with my dads 'genius' suggestion and used silicone and the old gasket then the base was a piece of aluminum i cut out with a section of maths book

 

lol and you wonder why you have problems

 

hahahaha, that shouldnt make it such a cunt though!

 

yes it should!... I am surprise it didnt blow up like that!

 

trussss me man i know what im doing kinda


why would that make it blow up?

 

sounds like it lol

 

haha, that was my mate going down 15 sizes, not me!

so why would it blow up from using silicone and heightening the barrel?

 

If you know what you're doing, why you listening to your mates, and why didn't you up jet in the first place

 

well i didnt know that part....

i didnt think it through

 

No disrespect but you obviously don't know what you are doing. Nothing wrong in saying it mind you.

Combustion chamber on a 70cc cylinder head is not the same size as the one on a 50cc in the first place. Plus ur using a 47mm piston, you can easily see a difference in size here... no?

That's why it was pissing coolant everywhere in the first place. As I said before, you can put a lot of silicone and get it to work... or even plaster!...

What dont you wait to have decent parts to do it right? Rushing it will only make it a bad project at the end.

 

yeah there's a reason why some things are cheap, if they were any good they wouldn't be not everyone is out to rip you off

 

oh no, i knew the head was the wrong size and was going to fuck up, thats why i made a thicker base gasket so it cleared it.
and the only reason i used silicone was because i had to use the old head gasket due to the new one being the wrong size which caused the leak.

if i didnt know what i was doing i wouldnt have recognised it needed a thicker base gasket before i even put the head on, or chamfering the ports, or how to re-use old gaskets. hell if i hadnt done a plug check i would if been riding it burning coolant.

the only part i fucked up on without realising was the up-jet

 

mate if i was you I'd just give up on the idea and just get a decent kit and buy a box of jets for 7quid that will cover all sizes you'll probably ever need for any level of tuning you decide

 

yea, when i either get my refund, or sell some other shit im gonna get a proper one.

how do those motoforce sport kits compare to the malossi/polini kits?

 

just listen to the guys on here