What did you do to your 2002 today !

[SydneyTii]

3 hours ago, TVeye said:

running '74 RD250 into a 350.

I grew up on these, RD200, RD400, RD350lc awesome era, power band magic😜

[0257]

7 hours ago, SydneyTii said:

I grew up on these, RD200, RD400, RD350lc awesome era, power band magic😜

+1.  Till the Kawasaki 750 came along this was the bomb.

[SydneyTii]

7 hours ago, 0257 said:

+1.  Till the Kawasaki 750 came along this was the bomb.

Absolutely, never owned one, but rode my mates, loved the sound they made, I worked on a couple of 350’s they were painful because they used to foul their plugs all the time, you had to really thrash them to keep them clean… which is ok when you're 17😜

[0257]

8 minutes ago, SydneyTii said:

Absolutely, never owned one, but rode my mates, loved the sound they made, I worked on a couple of 350’s they were painful because they used to foul their plugs all the time, you had to really thrash them to keep them clean… which is ok when you're 17😜

Absolute truth.  I kept a wrench and spare set of plugs with me.  But rarely had to use them, as I kept it wound!

[John76]

Converted my compression tester to a leak down tester. Added a regulator and extra pressure gauge with a 0.060" orifice made by drilling a 1/16" hole through a solder-filled nipple between the gauges.

I was getting low compression and progressively higher oil consumption, so I wanted to see leak down numbers.

Confirmed that the leaks were worn/broken rings. All air escaped through the oil cap opening.

Grisly results: #1  16%, #2  26%, #3  58% and #4  54%. Did it three times to make sure the results were valid. Other than the high oil consumption, my car was running the best it's ever been!

143,250 miles on original block. Head gasket and top end parts (valves, guides, seals and rockers) are all new.

Looks like it's time for rings, bearings, and perhaps pistons... another entry on my never-ending tinker list.

 

 

 

Edited June 23, 2023 by John76
Correction

[TVeye]

Nice, leakdown testing is crucial to 2 stroke tuning.

 

 

Edited June 23, 2023 by TVeye

[bergie33]

Made a little Tii Kugelfischer linkage gauge.

 

 

['76mintgrün'02]

1 hour ago, John76 said:

Added a regulator and extra pressure gauge with a 0.0060" orifice made by drilling a 1/16" hole

 

Thy orifice is too big!  1/16" = .0625".

 

 

[John76]

9 minutes ago, '76mintgrün'02 said:

Thy orifice is too big!  1/16" = .0625".

Or the "0" key on my keyboard is sticky. 

Sorry...should be 0.060".

 

['76mintgrün'02]

3 minutes ago, John76 said:

Or the "0" key on my keyboard is sticky. 

 

Your blue sharpie's sticky too!

 

Darn.  I was hoping I'd found an easy fix.  How much oil is it consuming? 

(I don't think I want to do a leak down test on my engine).

[7502]

1 hour ago, John76 said:

Looks like it's time for rings, bearings, and perhaps pistons...

Terrible news, I feel for you.  Could it be time for some emergency engine rejuvenating products like Sea Foam, Marvells Mystery Oil or similar?  Did you try 20W50?

 

[John76]

13 minutes ago, '76mintgrün'02 said:

How much oil is it consuming? 

My 120-mile drive last weekend used almost a full quart!

Never noticed blue smoke in the exhaust since rebuilding the head...but sure did on Saturday! 😩

PS: Corrected my blue sharpie.

[ray_]

4 hours ago, 0257 said:

Absolute truth.  I kept a wrench and spare set of plugs with me.  But rarely had to use them, as I kept it wound!

My GPz never fouled plugs.

 

[John76]

10 minutes ago, 7502 said:

time for some emergency engine rejuvenating products like Sea Foam, Marvells Mystery Oil or similar?  Did you try 20W50?

I do use 20w-50 (Valvoline VR1) year-round. 

This happened rather suddenly, so I think it's a broken ring(s).

Time for exploratory surgery...too late for rejuvenating products.

[Lucky 7]

Another visit. Final primer is done, just needs one last block and then color goes down. Eventually. 
 

 

At some point I’ll die and my bones will turn to dust and blow away and be reabsorbed by the lakes and trees and the lakes will dry up and the trees will die and erosion will knock down the Rocky Mountains and an inland sea will envelop what was once called Colorado and unknowable species will roam rampant through humanless vistas and the Earth’s orbit will destabilize and it will spiral closer and closer to the sun and eventually enter the corona and be incinerated and the sun will bloat and grow red and slowly dim before collapsing completely inward upon itself and send our tiny solar system, at long last, into permanent merciful darkness. 
 

BUT, before that happens, I’m hoping…just maybe…to get my goddamn car back from paint.