1985 Restored Red Mk1a MR2 (now with pics)

[seankenyon]

Peter,

Was your Mk2 Master Cylinder a Rev 2?

See link: http://www.imoc.co.uk/forums/viewtopic. ... r+cylinder

If so what year and what model specifically?

I know i would need a mk1b Servo by the way

[elbon50]

Peter,

Was your Mk2 Master Cylinder a Rev 2?

See link: http://www.imoc.co.uk/forums/viewtopic. ... r+cylinder

If so what year and what model specifically?

I know i would need a mk1b Servo by the way

It is a 15/16ths bore cylinder Sean

That's as much as i can tell you about it really

Bought it off eBay quite a while ago

Never did know exactly which year/model it came from

When i fit the ST185 twin pots will put it to use on my car

Peter

[seankenyon]

Cheers Peter,

I know it needs to be a Mk2 Rev 2 non-ABS model, but year and model would help when contacting breakers, anyone know?

[seankenyon]

Can a supercharger be bolted onto a NA 4AGE ? If it came with loom, crank pulley, throttle body, intake manifold plus brackets & plumbing...

But minus an intercooler!

Im guessing the fuel pump & ecu would need changing!

Cheers folks

[Lauren]

You'd need the ECU and all the wiring loom. You could put in an uprated pump, say one off a MK2 Turbo or somesuch.

You could do it I guess, it's physically possible. You'd also want the knock sensor too. Compression will be a bit high though.

Would honestly make more sense to turbo a 4AGE than to try and fit all the SC stuff to it really. It is far simpler!

[seankenyon]

Thanks Lauren, could you fit a thicker head gasket to lower compression?

[Lauren]

I guess you could do. To be fair plenty of people have run turbos on low boost with a stock 4AGE.

[seankenyon]

Its because there is a supercharger for sale with loom, crank pulley, throttle body, intake manifold plus brackets & plumbing...

But minus an intercooler!

Tempted if I DIY it onto my NA 4AGE and only have to get an intercooler, gasket, ecu and fuel pump

[elbon50]

Will be really interested in how you get on with that Sean

Am interested in low boost turboing my engine

I have a turbo manifold here with a flange to fit a Garett T25

Need to gather a lot more info & parts

[Lauren]

I've never seen anyone do it before, but I guess it's possible. ECU is necessary though.

Pics of turbo manifold, Peter? Where was it from?

[PW@Woodsport]

At the bare minimum you will require a USDM Mk1 engine harness/ECU and AFM plus dizzy and injectors, everything from a USDM car, and that is just for low boost mode. You'll also need an HKS gasket, studs, and a small fortune in other bits.

Oh and you'll also have to know what you're doing.

[elbon50]

Pics of turbo manifold, Peter? Where was it from?

Will take pics ASAP and post up Lauren

Perhaps start a new thread fot it so as not to hijack Sean's thread



If perchance i don't know what i'm doing am sure I'll get plenty of good advice Paul

[Lauren]

At the bare minimum you will require a USDM Mk1 engine harness/ECU and AFM plus dizzy and injectors, everything from a USDM car, and that is just for low boost mode. You'll also need an HKS gasket, studs, and a small fortune in other bits.

Oh and you'll also have to know what you're doing.

Why do you need USDM stuff? Don't get this at all.

[PW@Woodsport]

If you think about it how is a Uk Na MAP sensor going to see boost when all it ever sees is vacuum? What mapping is there inside a UK na ECU for boost even if the MAP could register positive pressure?

Using the USDM AFM means the air going into the turbo is metered and fuel allowed for regardless of boost up to 5 or 6 psi then it will all max out anyway.

You could maybe bluff the job with RR fuel pressure reg but that's not very precise.

[PW@Woodsport]

Edit : dp

[elbon50]

If you think about it how is a Uk Na MAP sensor going to see boost when all it ever sees is vacuum? What mapping is there inside a UK na ECU for boost even if the MAP could register positive pressure?

Using the USDM AFM means the air going into the turbo is metered and fuel allowed for regardless of boost up to 5 or 6 psi then it will all max out anyway.

You could maybe bluff the job with RR fuel pressure reg but that's not very precise.

Yes, I get that Paul

Extremely interesting

Have started a new thread for this with a pic of the manifold

[Lauren]

Okay, I get that, as you are talking about Peter turboing a 4AGE.

If you did have all the GZE stuff, though it's considerably easier and easier still if it's a later spec DLI GZE with MAP.

Crap thing with an AFM is that you can't run an external wastegate as unmetered air doesn't go down too well, so some kind of recirc' setup is needed.

If an HKS VPC can be aquired you can then ditch the AFM, solving that problem.

Just wondering if an HKS VPC could be a way of avoiding the hassle to get all the US stuff? Maybe added with an SAFC, could be an easier way of doing it?

I think Peter/Sean should start another thread!

[seankenyon]

Ditched the supercharger option as it was an item on ebay and went way over my budget, hey ho the rebuild thread continues...

Its looking likely Ill be blowing some cash on Brembo brake discs all round to compliment the Black Diamond Predator pads.

Ive also come accross a brilliant solution for customising my TSW Stealth alloy wheels without compromising authenticity if i decided to part with them onde day, watch this space

[Adam W]

Okay, I get that, as you are talking about Peter turboing a 4AGE.

If you did have all the GZE stuff, though it's considerably easier and easier still if it's a later spec DLI GZE with MAP.

Crap thing with an AFM is that you can't run an external wastegate as unmetered air doesn't go down too well, so some kind of recirc' setup is needed.

If an HKS VPC can be aquired you can then ditch the AFM, solving that problem.

Just wondering if an HKS VPC could be a way of avoiding the hassle to get all the US stuff? Maybe added with an SAFC, could be an easier way of doing it?

I think Peter/Sean should start another thread!

You can run an external wastegate as that is just dealing with exhaust gases, ie air that's already been through the air meter on the way into the engine. You might have problems running a vent-to-atmosphere blow-off valve, as this vents air which has been through the AFM before it reaches the cylinders, but recirculating ones are available readily enough.

[JMR_AW11]

If you think about it how is a Uk Na MAP sensor going to see boost when all it ever sees is vacuum? What mapping is there inside a UK na ECU for boost even if the MAP could register positive pressure?

Using the USDM AFM means the air going into the turbo is metered and fuel allowed for regardless of boost up to 5 or 6 psi then it will all max out anyway.

You could maybe bluff the job with RR fuel pressure reg but that's not very precise.

I suppose the other bluff/ bodge option is to swap the MAP sensor for one that reads boost and correct the slope with a differential amplifier circuit ahead of the ECU.

The other degree of freedom is adjusting the injector delivery rate with different injectors and this can be optimised to suit the revised MAP sensor slope.

That way you could use the stock ECU although you would want to have a manifold air temperature sensor rather than the one in the external intake.
That could prove to be the hardest obstacle to get working correctly with the stock ECU?

It already has various hidden linkwire options within it to 'remap' the ignition timing to get closer to what the boosted engine would want.