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The mkiv Supra Owners Club

Got My Car back..... BUT


Adam Kindness

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All seemed fine..... got away from the garage, gave it a boot full, no 2nd turbo :( just caries on with the acceleration from the 1st

 

Any ideas.....???

 

Its going back in tomorrow for a service, so i'll get them to investigate...... thought they would have noticed this on the testdrive tho :(

 

The exhaust blades and shaft were missing on No1 :( That was my problem

 

I'll get pics of them tomorrow

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Hmm. Normally when the sequential plumbing goes wrong you get behaviour like no boost or falling boost, rather than just one turbo working all in all.

 

Can you give a detailed description of how the car performs? E.g. Do you still get a transition moment?

What boost do you ge across the rev range?

Is there a dropoff, even slight?

Any different noises?

Does the car feel like it loses or gains power at any point?

What does the engine rev like from idle?

Is there any coloured exhaust smoke - blue, black, white?

If you rev the engine up and abruptly let off, does it return smoothly to idle of stutter, drop to very low rpm, stutter, nearly stall, that sort of thing?

Any other wierdness, especially intermittent behaviour?

 

Idle speed should be about 680rpm when warm, with no lights, rear demister, or aircon on. It should also be smooth with slight hunting variances now and again.

 

-Ian

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cars still in the garage :(

 

they cant work out whats wrong :( They were trying to tell me thats how it should be!!! I.e turbos both working at the same time..... My response... er, NO!

 

 

Justin, Chris - is it OK to give them your num so they can have a chat with someone whos knows the cars a bit better?

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Would it not be possible that the transition VSV which opens up the manifold to the second turbo isnt working? So all the boost just runs out turbo 1?

 

If you get a slight drop at about 3500rpm then it could be the prespool bit is working but the main bit of transition over to turbo2 isnt working. You really need to watch the boost gauge as it does it.

 

JB

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thats what i suggested to the owner of the garage... just feels as if the 2nd turbo isnt opening up (i'll get him to take it out tomorrow morning with me in the psgr seat watching the boost)

 

me and him were pottering round for 30mins this eve, but he kept trying to tell me that supra turbos worked in parallel :(

 

 

i just wish it was all better :(

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Guest Martin F
Originally posted by Adam Kindness

me and him were pottering round for 30mins this eve, but he kept trying to tell me that supra turbos worked in parallel :(

 

 

i just wish it was all better :(

 

Maybe time for a different garage at their expense ?

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nothing wrong with leith ;) you seen the amount of supra's that go round about there !

 

Anyway - the car..... the fixed it..... was a disconnected vacuum hose.... they then fucked it again :( its back to what it was like before the 'good' turbos were fitted.... i hope to god they havent blown the new ones ona testdrive!

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Find out which vacuum hose. I'm trying to get an idea of the symptoms people get when various hoses are disconnected, and yours were symptoms I haven't experienced yet.

 

And no, I'm not going to yank every hose off mine one at a time to find out :D

 

-Ian

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