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Makotosun
1982 DT2 250 blew hole in piston
- wbrewstersr@gmail.com
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1982 DT2 250 blew hole in piston was created by wbrewstersr@gmail.com
Hi everyone
well my bike lost compression took the head off and found a hole in the piston I think it was from running to lean
the needle jet was on the second clip from the top
I lowered it one notch I am waiting on a piston and a flywheel puller to check the timing
my question is the piston I pull out has two rings
apparently the one I ordered is only going to have
one ring it show original new old stock for DT2
should I attempt to use the piston with one ring or order another one with two
thanks
I attached a picture it the piston with hole
well my bike lost compression took the head off and found a hole in the piston I think it was from running to lean
the needle jet was on the second clip from the top
I lowered it one notch I am waiting on a piston and a flywheel puller to check the timing
my question is the piston I pull out has two rings
apparently the one I ordered is only going to have
one ring it show original new old stock for DT2
should I attempt to use the piston with one ring or order another one with two
thanks
I attached a picture it the piston with hole
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- DT400FRANK
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Replied by DT400FRANK on topic 1982 DT2 250 blew hole in piston
I'm not really sure but I seem to remember that the YZ's used to have 1 ring for racing. Looks like the engine was pinging.
16 Jun 2021 20:58
#2
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- wbrewstersr@gmail.com
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Replied by wbrewstersr@gmail.com on topic 1982 DT2 250 blew hole in piston
I put the wrong year it’s a 1972 model
what would make the engine ping
the crank bearings fell good
what would make the engine ping
the crank bearings fell good
16 Jun 2021 21:02
#3
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- wbrewstersr@gmail.com
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Replied by wbrewstersr@gmail.com on topic 1982 DT2 250 blew hole in piston
Ok figured out what pinging means that’s why I need to check the timing
thanks
thanks
16 Jun 2021 21:17
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- RT325
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Replied by RT325 on topic 1982 DT2 250 blew hole in piston
That's a shame. All the shrapnel goes down the bottom too. Better up the jetting & go for a cold plug like NGK9 as i guess you're giving it a hard time on the trails or highway. Is the piston kit you have coming the mx or yz type with a cutaway on the inlet side rather than two window holes. Single ring will be good--now you have it ordered. Pic of the piston kit would be nice, or a link to where you bought it just for a look. Thanks.
16 Jun 2021 21:42
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- apex
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Replied by apex on topic 1982 DT2 250 blew hole in piston
2 different pistons in your photos. I'm assuming the 2nd one is yours?
Allrighty Then
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- wbrewstersr@gmail.com
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Replied by wbrewstersr@gmail.com on topic 1982 DT2 250 blew hole in piston
I was running about 50 mph when it let go only put maybe 25 miles on the bike since I had it have working on electrical to make it street legal which it is now but lost compression
i also cleaned the shrapnel out wasn’t very much
here is a pic of the piston and rings hope they are compatible
i also cleaned the shrapnel out wasn’t very much
here is a pic of the piston and rings hope they are compatible
16 Jun 2021 21:52
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- wbrewstersr@gmail.com
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Replied by wbrewstersr@gmail.com on topic 1982 DT2 250 blew hole in piston
Same piston one pic of the piston in the cylinder and one pic of the piston off of the engine
16 Jun 2021 21:59
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- DT400FRANK
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Replied by DT400FRANK on topic 1982 DT2 250 blew hole in piston
Check for intake air leaks also. Clean your carb real good and triple check all of the passages in the carburator very thoroughly.
When you get it back together take it easy on the engine and let the piston ring seat a bit and check the plug. Using a regular dinosaur oil and not a sythetic could give you a bit of ash to tune the bike better as the plug will read better.
When you get it back together take it easy on the engine and let the piston ring seat a bit and check the plug. Using a regular dinosaur oil and not a sythetic could give you a bit of ash to tune the bike better as the plug will read better.
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- wbrewstersr@gmail.com
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Replied by wbrewstersr@gmail.com on topic 1982 DT2 250 blew hole in piston
Thanks I sure will
16 Jun 2021 22:09
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