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Discussion Starter #1
Hey people! Im going to be lurking around here for a while. Just brought a '90 classic with a janspeed single turbo conversion. So far, very fun! Turbo adds a little some thing special to the v8! Cant really find that much information on them. Any one here know any info?

Here is a wee picture. Need to give it a good clean and have a bit of a tinker but all seems really tidy.

 

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Welcome to the forum! Nice looking Rover and I'm sure that extra bit of oomph is something any of us would welcome. I had heard the name Janspeed in the past but don't know anything about it.
 

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montymayhem said:
Here is a wee picture.
That's not the picture we want to see. We all know what the outside looks like, but we want to see under the bonnet!
 

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G'day welcome to the forum.

Any chance of some more engine bay shots?

Is it intercooled?

Also, remember to let it 'warm' down for a few minutes after hard driving. You probably knew that already though.
 

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Discussion Starter #6
It is intercooled yes, Im going to do an oil change today so I'll take some more pictures. What is the reason behind letting it run for a few mins after driving? I have heard you should do this. Is it to do with pressure or the circulation of oil? I'll have to read up on this shortly. Thanks for the advice tho Rufant.
Monty.
 

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montymayhem said:
It is intercooled yes, Im going to do an oil change today so I'll take some more pictures. What is the reason behind letting it run for a few mins after driving? I have heard you should do this. Is it to do with pressure or the circulation of oil? I'll have to read up on this shortly. Thanks for the advice tho Rufant.
Monty.
The turbo spins very very fast (say 100,000rpm) and is fed oil under pressure.
When you turn the engine off that oil pressure drops to almost nothing.
If you've been driving quickly the turbo may continue to spin for a minute or two after the engine is off - during this time it would have no oil pressure to lubricate it.
I tend to drive the last quarter mile or so at very low revs (off-boost) to get around this.
 

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It is more to do with heat. The turbo obviously gets very hot (quite possible to get it hot enough to see it glowing at night when you open the bonnet), especially during hard driving. Switching the engine off immediately will stop the flow of oil and coolant (it's it's water cooled, looked like it was from the photo) through the turbo as the relevant pumps stop with the engine. This means that the very hot turbo sits there baking itself and the oil in it while it cools down.

As Tim suggested driving the last few miles gently or letting it idle for a few minutes before shutting down helps look after it. You can get a simple electrical timer called a turbo timer, which will do the job for you if you don't want to sit there.
 

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Discussion Starter #9
Thanks Rufant and Tim for that explanation. I return with a couple of questions and some more photos as I said I would.
Firstly, excuse my ignorance!
What goes in this space?


Next stupid questions.
Im going to need some bolts to re attach this:

Where can I get some?
Or could some one advise me on what type to search for.

Last of all some gratuitous engine stuff.


 

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montymayhem said:
What goes in this space?
The battery, normally - I see yours has been relocated to the other side.
 

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Maybe moved to clear that intercooler pipe.

Heat wrapping that exhaust manifold the intercooler pipe runs past would be a good idea too.
 

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In North America that space is the air intake plenum.
That other item you have there appears to be an AC compressor. You know where your turbo is sitting right now?...
 

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Discussion Starter #14
Still no luck on the bolts to re attach the a/c pump yet. Replaced a rear window motor today which was really straight forward.
Good thinking with the heat wrap, I'm going to look into that. What would you suggest is best to use?
Ikoinu, its sitting on the driveway. lol
 

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Good thinking with the heat wrap, I'm going to look into that. What would you suggest is best to use?
Here you can buy specialist exhaust heat wrap from auto parts suppliers. Sure you have something similar there.
 

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Oh, so you're removing it to install the ac? Didn't catch that.
 

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Discussion Starter #17
ikoinu we are at crossed wires!! lol Im not removing any thing. I just want to put the a/c back in as the last owner removed it. He gave me the compressor and the mount with the car but not the bolts to re fit it. Just wondered if any one knew where I could get them. Im trying some breakers yards at the moment.
 

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Sorry, let me clarify my questions.
Have you fitted up the A/C compressor to the mount, minus the bolts, to see how it fits? There is a reason the compressor was removed, and looking at the turbo's placement, my guess was it was done to fit the turbo and intake in. Also, looking behind your front mount intercooler, is there a condenser and fans still installed? Might have been removed to make room for the intercooler. If so, the projects scope will be much larger than initially envisioned.
If not, then you'll have a turbo and air conditioning. Best of luck.
 

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Thats what i have just being doing the last few days,stripping out my air con for the turbo to fit.i am sure the intercooler is supposed to be mounted below also,thats where my boost pipes lead me to anyhow,downstairs.Paul.
 

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;)
Probably could fabricate a mount for the intercooler to be in front of the condenser/ fan assembly, and use some flexible Samco intercooler pipe hoses to extend the factory's. Would have to permanently remove the plastic grill though, and the a/c performance would be down a little as well as the radiators cooling ability due to the lack of air flow. I would change out the clutched fan in this case and run the 18" Taurus 2sp electric fan instead. That is what I am currently running. Cools like nobody's business.
 
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