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Oil for oil injection on MT250 http://vintagedirtbikeforums.alp-sys.com/viewtopic.php?f=21&t=4841 |
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Author: | starrblade [ Tue Dec 12, 2017 5:49 pm ] |
Post subject: | Oil for oil injection on MT250 |
What is a good oil to use for the MT250's oil injection system that it currently available? Thanks in advance |
Author: | rayivers [ Tue Dec 12, 2017 6:01 pm ] |
Post subject: | Re: Oil for oil injection on MT250 |
Bel-Ray Si-7 is an excellent 2t injector lube. Unfortunately, the MT injection system tends to significantly over-oil the engine, so you may want to adjust the oil-pump cable down a bit, run a hotter plug, etc. Ray |
Author: | starrblade [ Tue Dec 12, 2017 6:05 pm ] |
Post subject: | Re: Oil for oil injection on MT250 |
Thanks for the quick reply. |
Author: | ruouthere [ Thu Dec 28, 2017 8:46 pm ] |
Post subject: | Re: Oil for oil injection on MT250 |
rayivers wrote: Bel-Ray Si-7 is an excellent 2t injector lube. Unfortunately, the MT injection system tends to significantly over-oil the engine, so you may want to adjust the oil-pump cable down a bit, run a hotter plug, etc. Ray You mentioned to "...adjust the oil-pump cable down a bit..." I'm assuming you mean to loosen the cable at the oil pump and put a little more slack in the cable, correct? Any way to quantify or all trial and error? Back in the day I seem to remember just jumping on mine, firing it up and away I went with a strong, smooth pull through the power band. Hoping to get this one running that way too. Thanks. |
Author: | rayivers [ Thu Dec 28, 2017 10:11 pm ] |
Post subject: | Re: Oil for oil injection on MT250 |
Quote: I'm assuming you mean to loosen the cable at the oil pump and put a little more slack in the cable, correct? Yes. Both the bikes I worked on would surely still be over-oiled even with enough cable slack to keep the idle oil output up to @ 3,000 rpm. Pump output is dependent on both cable position and rpm. Quote: Any way to quantify or all trial and error? Absolutely - disconnect the oil feed at the intake manifold and run it into a small plastic bag, plug the manifold hole, and run premix. You'll likely find the bike runs noticeably crisper, and you'll have a very good idea of pump output. Ray |
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