Twin Turbo pack removal

[Jus]

Originally posted by Martiny
Thanks Jus!

My Cat had been making a rattling noise on idle. And at night I could see stuff coming out the exhaust under boost.

Geff took it off, and, yes, it was falling to bits. So we put on Martin Sintler\'s old mid-pipe. It was a bit better, but still 8, sometimes  9 PSi  :-(

I just hope to goodness its fixed when I\'ve put it all back! It can only be the ECu then, but Geff did do a few tests on the ECU.


Hope to get my parts tomorrow/Friday, then its jigsaw time again!

Good luck Martin.

Yes sounds like a dodgy second turbo! Just out of interest, have you been getting a cloud of oil out of the rear on start up say, after the car has been stood for a few hours?

Jus

[Jus]

Originally posted by clive
Wow, what are you going for ?

All the Best Clive.

Next mod\'s to include;

1: TO4E (Courtesy of Chris) however, I may go for something bigger maybe S or R! So Chris do you have anything else in you Aladdin’s cave? ;-). I personally don\'t fancy a RB turbo, yet!
 
2: 1300\'cc Secondary\'s

Hopefully completed for the 21st April TOTB qualifying run at York Drag Strip, RWYB day! It\'s on a Bank Holiday Monday as well! So anyone going? If so, come over and say hello!!

Nothing too radical but makes for a decent road/track set-up!

It\'s Chris with his motor that I can’t wait to see, mmmm! But I\'ll enjoy being the bully for a bit longer, hey Chris?

Regards


Jus

[Martiny]

Right, I collected my new clutch plate from Geff this morning.

So far  I  have refitted the new turbo pack, Radiator (which was leaking), and air pump.

I have left the plenum off for now, so I can easily access the top gearbox bolts.

So, there\'s hope that Ill be going by or on the weekend!!!


Clive,  I took my old turbos to Geff. He removed the secondary from the pack, and at first it looked fine, no damage to the blades. Then he noticed that the colouring around the turbo housing, and on the blades was not uniform. There was some blow by as well. Half the blades where black, the other half light brown???  There is a sleeve that tightly fits around the blade, and that seems to have been badly fitted.

So, we think that the sleeve allowed the blow by, and therefore not much force on the secondary turbo from the exhaust, and the shaft was sticking, too. (Only explaination for half/half colours).


Heres holding thumbs that I\'ll have 11 PSI when I get here going again.

[bnaellis]

Hi Martin,
It was good to finally meet you on saturday. Well it sounds like you are making real good progress on the fd. Question: did you notice any smoke under hard acceleration when you had this secondary boost problem ??


rgds

Brian

[Martiny]

Brian

It was good to meet you, too.  There wasnt smoke as such. At night, if I looked closely, and if there was a car behind me, I could just see some stuff coming out. I think this was from the Cat, though.

Got the new clutch in, and gearbox on. Tonight I refit the Plenum, Intercooler, Steering shaft. ( I hope)

Hopefully, I can try and start it up tomorrow night!

[bnaellis]

Good on ya mate,
Didn\'t take that long either. I\'m gonna get my fingers dirty next month too, I\'m gonna fit a new intercooler, not quite as extensive maintainance as yourself, but considering I can be just about bothered to change my brakes, it\'s a big job for me.
Hope it goes well and you have your 2ndary boost back.

rgds

Brian

[Martiny]

Brian/Guys

Ok, made good progress last night. Got the exhaust back on, and bled the clutch. Then I knocked the brake fluid bottle over the engine!!1  Arggh!

After cleaning that up, started refitting the steering shaft, and I could not get one of the bolts to bite, and I may have stripped it  :-((

Thats when I gave up last night!

So, hope I can sort that tonight. Then its replace the plenum, and see if it starts!

MartinY

[Martiny]

Ok, see you all on Tuesday night!

She\'s going again. No more fuel smell, no more water leak, no more slipping clutch.

Only trouble is... still only 8 PSI on secondary. I think Im gonna give up and take it to Geff :-(

[Glenn Butcher]

Good stuff Martin, that must be frustrating :reallymad for the boost to still only be 8psi

Did you take it around the block with the exhaust off? would be a good test!

I can\'t make it on Tuesday night  busy at the moment with family over from Oz etc.

[bnaellis]

Sorry to hear Martin but don\'t dispair, the original link I gave you for dismantling and re-assembly of the turbos is in my opinion the best info I have found for trouble-shooting these kind of problems on a rx-7. I don\'t know what you have checked already but have a look at the below link and go to troubleshooting & symptoms and have a good read I am sure it will help.
http://www.autosportracetech.com/RX-7/rx7stuff.htm

rgds
Brian

[Martiny]

Thanks Guys

Brian, thanks, I have all that stuff!  I dont know wether to start again with my diagnostics, or just take it to Geff for a day, or just cough up and take it to Rotechniks.   Maybe I\'ll leave it till May, Im away the whole of April. But I really wanted to do the track session on 17th May, and was hoping it wuld be sorted by then.

I think there is a way of running non sequential. Maybe that would give some more clues. So i might try that, too.

[bnaellis]

This is only on the second turbo?? I take it that means you get 10-8-8 ??
Does this make any difference whether car is hot or cold ??
or do you get 10-8-10 then it tails off to 8psi in high rev range ??


rgds

Brian

[Martiny]

Hi Brian

Its a 11-8-8.

Therefore i dont suspect a leak anywhere.

Next im going to replace the ecu, then I going to run it nonsequential, for diagnostics.

[bnaellis]

I\'m still trying to dig up some info for you, bear with me

rgds

Brian

[andrewrx7]

Hallo,

Reading this thread with interest. Did my inlet manifold gaskets a while ago, so had to remove all the turbos and associated bits and pieces.

Seems it went well.

I see your comments on the boost pattern, is the classically quoted 10-8-10. I have just fitted a boost guage and can now also see I get a 10-8-8.

If this thread is still active, is there REALLY going to be that much of a difference with 2 psi? Is it a lot of effort/money for a tiny/or non-noticable improvement??

Hope you do get yours sorted, and let us know how much better it is!

Cheers