Tri-Z short cylinder...it runs!!!!

[maggiesboy]

other than the dealer. I was just quoted $51.00 at the dealership WTF??

[Sinbad46]

33,00 here in Québec for that gasket!!

[HEAD09]

is it possible the someone could make some for us....copper maybe

[clutchcargo]

Bike bandit?

[maggiesboy]

Bike bandit?


They want $42.00 for it !!

[NOS_350X]

i got one ill ship ya $20 shipped Its a comtek, i bought a topend kit and didnt use the headgasket.

[sblt500r]

$32 for a complete top end kit from cometic. they probably sell you just the head for $20 shipped.

Top End Kit C7153 71.0 mm $32.71

[tecat-z]

Buy the 83 yz250K head gasket. I've said this many times. It's cheaper and is direct replacement. 83 is the ONLY year that works with the tri-z's! It's one piece material, not the multi layer sheet metal tri-z style. It'l save you a few bucks, and in a pinch can sometimes be reused. Plus, it's oem quality, which is in my opinion far superior to any aftermarket gasket.

[clutchcargo]

They want $42.00 for it !!

Ouch! Sorry, I didn't check first.

[maggiesboy]

Buy the 83 yz250K head gasket. I've said this many times. It's cheaper and is direct replacement. 83 is the ONLY year that works with the tri-z's! It's one piece material, not the multi layer sheet metal tri-z style. It'l save you a few bucks, and in a pinch can sometimes be reused. Plus, it's oem quality, which is in my opinion far superior to any aftermarket gasket.


You are the man!:beer :w00t: Just called the stealership.....23.82 :D:D:D

[NOS_350X]

But with a 3 piece gasket you can take it appart to jump up your compression.

[maggiesboy]

Buy the 83 yz250K head gasket. I've said this many times. It's cheaper and is direct replacement. 83 is the ONLY year that works with the tri-z's! It's one piece material, not the multi layer sheet metal tri-z style. It'l save you a few bucks, and in a pinch can sometimes be reused. Plus, it's oem quality, which is in my opinion far superior to any aftermarket gasket.

How many people have used a 83' head gasket?

[NOS_350X]

I have a 83 yz cylinder with a Tri-z gasket.

[Bryan Raffa]

I have used them .. they bond really good with both surfaces...and are a real PITA to clean up after you take the head off..

[TRITecate350]

I have 2 for $5. OH Wait..... That is for a billet head gasket......sorry guys
hehe, :p

[maggiesboy]

I have 2 for $5. OH Wait..... That is for a billet head gasket......sorry guys
hehe, :p

That is effed up! Now that I need one of them, your playing with me Dammit

[maggiesboy]

stocker $50.00+
83 YZ 250K $24.00
Moose racing P/N M810660 complete top end kit for 83-85 YZ 250 $19.95 :D:D:D:D:D

[03 ORANGE SHEE]

you loose compression on the 1983 gasket , its .60 thou .thick
the tri-z one is only .40 thick, these are compressed numbers
take out a set of calipers and you will see...

[maggiesboy]

I need that extra clearance, as you can tell ........ the base of the cylinder was so warped, it has to be cut a bunch

[tecat-z]

Ummmm, looks like you're gonna need more than a different head gasket. You might have to double or tripple up base gaskets to bring up the cylinder to where it's supposed to be. As is, your timings are gonna be way off. And, if the head has been decked, the squish area is gonna need some work.

[Bryan Raffa]

Ummmm, looks like you're gonna need more than a different head gasket. You might have to double or tripple up base gaskets to bring up the cylinder to where it's supposed to be. As is, your timings are gonna be way off. And, if the head has been decked, the squish area is gonna need some work.

I agree..tell sprock you need one of them fat base gaskets:postwhore

[maggiesboy]

Jim at JS racing engines did the top end, and said they ported the cylinder after the jug was cut and new sleeve installed. Here is how they cut the head to accommodate for the piston.

[Bryan Raffa]

I would try a oem one with a half a tube of silver seal in the radaitor to cure weeping up the stud

[maggiesboy]

I would try a oem one with a half a tube of silver seal in the radaitor to cure weeping up the stud

It was not weeping up the stud, it blew the headgasket, and they resurfaced the head.

[clutchcargo]

I would try a oem one with a half a tube of silver seal in the radaitor to cure weeping up the stud
Not to sound stupid, but what causes it to weep at the stud. Shouldn't the gasket seal this?

[Bryan Raffa]

not torque correctly.. not re-torquing after a warm up and complete cool down.

try the Dirtbike gasket,,even if it drops your psi a few ..its cheeper and you might find out if you have a clearance issue with the head.. what was the PSI on it before it blew?

[clutchcargo]

Oooh..ok thanks. Good to know.

[maggiesboy]

what was the PSI on it before it blew?

compression was 210 before the engine ever started

[03 ORANGE SHEE]

I need that extra clearance, as you can tell ........ the base of the cylinder was so warped, it has to be cut a bunch

i would get another cylinder, your port timing is going to affect how it runs, and its way off with the piston up past the cylinder like that

[maggiesboy]

I spoke with the guy that ported my cylinder, he assured me that the ports have been ported to compensate for the lack of cylinder height. I installed the composite 83 YZ 250 gasket, and warmed it up for 10 minutes. I shut it down, and will let if get completely cold, then re-torque the head and jug. Anyone else have anything to include?

[maggiesboy]

I let it cool overnight. I got home from work today and did a re-torque of the head....wow that was way loose. I let it run for another 10 minutes and shut it down. I'll attempt to tackle jetting tomorrow.