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Turbo and engine restorers

posted by  someone claiming to be donnie on  Sat Dec 8 09:56 CST 2001 [RELATED]

I was thinking of dumping a bottle of restore4 in the old 760gle turbo wagon, being i have 193,000 miles and the piston rings are leaking. Even though i like the smokescreen when i drop my foot to the floor accesing a highway, i wish to rebuild this engine next summer. I just want a temp fix for winter and was wondering if the restorer would damage the turbo, being it was rebuilt only a few thousand miles ago?

I have used it in saabs and bimmers, and the stuff actually does seem to help with idle hesitation and smokey hard accelerations.

Donnie







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    Re: Turbo and engine restorers

    posted by  someone claiming to be David M on  Sat Dec 8 14:14 CST 2001 [RELATED]

    First you have to know if it's the engine or the turbo. If it's the turbo, you get the smoke when accelerating from idle, but (mostly) it goes away pretty quickly. This would indicate the rear oil seal of the turbo is worn.

    If it's the rings, then you'll notice a serious loss of compression. Have you had your compression tested? I brought two B230FT's past 250k and never lost compression. (I did have to rebuild one of the turbos, though.)







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      Re: Turbo and engine restorers

      posted by  someone claiming to be donnie on  Sat Dec 8 17:56 CST 2001 [RELATED]

      it is the piston rings, the turbo works perfectly. the smoke occurs at pedal to the floor at around 40 mph or whenever i downshift manually on the auto tranny and stomp on it.

      i was just wondering if the restorer would damage the turbo?

      Donnie







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        Re: Turbo and engine restorers

        posted by  someone claiming to be David M on  Sun Dec 9 23:35 CST 2001 [RELATED]

        Won't damage the turbo if the restoration is done if the engine is R&R'd. Turbo will come off with the exhaust manifold. If turbo removed separately, do a thorough inspection, and keep the ends sealed or covered to prevent the introduction of particulates. Shouldn't damage the turbo if proper procedures are followed. The only way this process could hurt the turbo is if some particulate or something got blown through the exhaust to the impeller side of the turbocharger. Not likely to happen if normal standards of cleanliness are maintained.







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    Re: Turbo and engine restorers

    posted by  someone claiming to be Frank on  Sat Dec 8 11:05 CST 2001 [RELATED]

    It won't help you whatsoever, a complete waste of money.

    The problem you'll discover with trying to rebuild that engine yourself is that you'll need to first have the cylinders bored, not honed because they'll need it. Then the OEM oversized pistons w rings run about $900 for all 4, not to mention that better connecting rods might also be in order (big $$). Add cylinder head repair (which will probably also be a good idea) and your parts and machining costs will probably exceed $2K, not to mention your time.

    You'ld be better off looking for a good used '93-'95 940T engine (best B230FT) instead. My $.02, been there/done that too.







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      Re: Turbo and engine restorers

      posted by  someone claiming to be donnie on  Sat Dec 8 11:12 CST 2001 [RELATED]

      i havent completely decided to use the motor. Im pretty sure that i will, but it is going to be for a 122. the 230ft is a decent fit for the 122 and i am familiar with it.







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        A 122?

        posted by  someone claiming to be Frank on  Sat Dec 8 19:09 CST 2001 [RELATED]

        For a 122? What then is wrong with a B18 that came with them or B20? Those things were tough little engines and more durable than the B230FT ever was. Sure, the FT will have ALOT more power but it'll require the intercooler, all front engine related wiring from the doner car, etc.







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          Re: A 122?

          posted by  someone claiming to be donnie on  Sun Dec 9 12:23 CST 2001 [RELATED]

          it has a b-20 now, in pristine condition, rebuilt last year.

          i was just wanting to put the 230ft and turbo on to have a good track car. I want to have a challenge, and it will be my first engine swap not using stock engine. i have alot of help from brickboard.com. there are two gents there that are doing the same and they sure are loving it.

          I have my eye on another 122 to keep as an all original, so i would like to tear this one down and see what happens.

          By the way, the b-20 had 445,000 miles on it when it was rebuilt, so i know its a tough little engine!!

          Donnie






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