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M-JA11V. F6A turbo problems

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Offline jcb4293

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Re: M-JA11V. F6A turbo problems
« Reply #3 on: March 14, 2019, 01:05:34 PM »
Thanks for the tip on the geo metro, I'll double check the water and oil lines. I found on Ebay a RHB31 VZ21 (off the Rhino Atv) that advertises to be compatible with the ja11. I'm in the middle of installing it. I'll let you know how it turns out for your future reference.

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Offline quoris

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Re: M-JA11V. F6A turbo problems
« Reply #2 on: December 30, 2018, 06:59:03 PM »
I have the same car a ja11 1990. I have raced turbos for a log time and these little turbos are ran hard in our trucks. So rule number #1 even on a normal drive you must let turbo cool for a minim of 30 seconds before shut down due to heat. 1-3 min if ran hard, or install a turbo timer. With proper care and feeding to the turbo a good quality turbo will out last an engine. I have never had a turbo go bad on me even after a few good road races. I'm not say it can't happen but after two bad turbos i think some thing else is the problem. I have only had mine for 3 months but i could swear there is a 1/4 inch water line that goes to the turbo to help cool it. A over looked item on turbo cars is the oil line that feeds the turbo. After many miles the line can become restricted with debris  or sludge. I have cross referenced the tune up parts with normal cars state side to help with normal maintenance. like cap rotor, air filter, oil filter, ect.  This way i can walk into napa and ask for a cap and rotor for a 1990 geo metro and walk out the door for 20$ and not 100$ online for Jimny. To answer your question about a different turbo sorry to say but I think it will be a custom made manifold and then pick any turbo you want.  If you are not looking to hot rod it Japanese made stuff is plenty good if bone stock. So look into the proper care and feeding of that stock turbo i think you might find your issue.

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Offline jcb4293

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M-JA11V. F6A turbo problems
« Reply #1 on: November 25, 2018, 11:37:08 AM »
I imported a 1990 jimny about 3 yrs ago. In that span I replaced the engine, turbo, fuel filter, and all the hoses. I kept everything stock. I've put maybe 10k miles on the new engine and my turbo has blown out. This is the 2nd turbo I've bought. The 1st one fell apart in the 1st week.

I've taken my car to a mechanic and they said it looks like the turbo destroyed itself from the inside, just like the one my car came with. I dont think I got my turbos from Yokohama motors yet, so I'm going to try there.

Does anyone have any ideas as to why this is happening?I feel like it cant just be part failure if its happening this many times. It's a simple turbo, it gets cooled only by oil.

Does anyone know of any turbos that are compatible with this car?