Suzuki Central Forum banner

21 - 32 of 32 Posts

·
Super Moderator
Joined
·
4,143 Posts
Those are stock valves that you removed. As far as I know, you should run the dual springs with KW valves. Heavier valves require more spring pressure and the stock springs do wear out and get weak.

Any new piston you buy must be matched to the cylinder. If the piston is bad, the cylinder usually has some damage, so most people replace both as a kit. Since they are already matched together, all you have to do is gap the rings (file them down to within specs) and bolt it on.

The OEM starters are not cheap, probably $300. I have no experience with aftermarket starters, but I assume they’ll work for a little while, at least.
 

·
Registered
Joined
·
87 Posts
Discussion Starter #22
Jet u are the man...
ordered cylinder+weisco piston, also ordered the KW drz duel springs...

starter i ordered something at 40 $ with 2 years warrenty , so seems fine to me
thx for all the help, i will update when the engine running(hopfully)
 

·
Super Moderator
Joined
·
4,143 Posts
There’s an actual “ring filing“ tool you can get from most auto shops. Looks like a tiny little table with a grinding wheel sticking out of it and a hand crank. Made so you can lay the ring flat on it and it files the edge square, leaving the “burr” of metal pointing away from the cylinder wall. Pretty neat and cheap.
 

·
Super Moderator
Joined
·
3,348 Posts
I have had good luck with the chinese starters..
 

·
Registered
Joined
·
87 Posts
Discussion Starter #27 (Edited)
OK
so finaly finished my build ,weisco piston with cylinder 90 mm bore, did a compression test (i know it was cold engine) came out as 80 psi,tried to start the quad , whould not fire up, so i did a leakdown test and had some very lightly air in the cranckcase, opened everything again and checked the rings again.
weisco said in instruction to divide the bore in 25.4 (=3.54 ) then do double it 0.004 in, adns 2th in 0.005
the first ring gap was 0.014 in, the 2th was around 0.020 gap, is that seems right?
also the cylinder and the head gasget that i had (new) were diffrent from the gaskets who came with cylinder and piston from weisco, was diffrent in thickness, what does thickness means to compression?
was my foult that i didnt used the gasket that weisco sended?
had fuel air and spurk , not sure why she didnt fire up beside copression faliure of some short....
 

Attachments

·
Super Moderator
Joined
·
4,143 Posts
I would expect the rings to leak a little since they haven’t seated and no oil on them. I doubt that is your issue. Seems to me it needs to run first for an accurate comp test. May be some other issue.

Thicker head/base gaskets would slightly change compression ratio, but shouldn’t change the value on a compression test by much.
 

·
Super Moderator
Joined
·
4,143 Posts
Assuming valve timing and clearance are correct, and you have good fuel and strong spark, it should fire. If all of that is good, I guess wiring? Hard to say from here.
 

·
Premium Member
Joined
·
4,879 Posts
is spark plug wet?
 

·
Registered
Joined
·
87 Posts
Discussion Starter #32
finaly it fired up, after like 15 min of driving it whouldnt fire up again only if i push start it , so i checked valves lash again and the exuast were a bit off, i reshimed but 2 caps got Stripped Cam Journal Threads (yey) , so i helicoil them, hope it was all that and this project will be over soon...
 
21 - 32 of 32 Posts
Top