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Turbo SU carb wanted

Nickp - 30/9/13 at 05:57 AM

I'm thinking of bolting a turbo onto my Lancia Montecarlo. Gonna keep it simple to start with and blow through a Metro/Maestro/Montego Turbo 1.75" SU. Anyone got one gathering dust? No daft prices please as it's just an idea at the moment

whitestu - 30/9/13 at 08:24 AM

I don't have a carb but love the Monte - I nearly bought a powder blue one in the 80's. Wish I had now.

owelly - 30/9/13 at 08:45 AM

Not a Skinners Union but....
http://pages.ebay.com/link/?nav=item.view&id=281177645905

Nickp - 30/9/13 at 09:00 AM

quote:
Originally posted by whitestu
I don't have a carb but love the Monte - I nearly bought a powder blue one in the 80's. Wish I had now.

Nickp - 30/9/13 at 09:06 AM

quote:
Originally posted by owelly
Not a Skinners Union but....
http://pages.ebay.com/link/?nav=item.view&id=281177645905

I know they're cheaper and more readily available but is a 32mm single choke weber really going to be upto the job on a free breathing 2.0? I know they can top 200bhp on the little 1.4 but I just think a 1.75" (45mm) SU would be better. Ideally I'd like the twin choke off an early Delta HF Turbo, but they're like rocking horse poo apparently

Norfolkluegojnr - 30/9/13 at 09:52 AM

you can rebuild a standard SU to turbo spec I believe, i looked into it when I had the Mini Turbo.

Have a read up on the turbominis website, should explain all, and a standard SU is considerably cheaper

Nickp - 30/9/13 at 10:04 AM

quote:
Originally posted by Norfolkluegojnr
you can rebuild a standard SU to turbo spec I believe, i looked into it when I had the Mini Turbo.

Have a read up on the turbominis website, should explain all, and a standard SU is considerably cheaper

Fair one, had a quick look on there earlier. Does that mean you can also build a larger, say 2" SU, to turbo spec too? Just a thought

Norfolkluegojnr - 30/9/13 at 10:27 AM

don't think so as its the uprated seals that allow it to be converted - unless the seals are interchangeable?

here is the first thread on it, but there are loads on there.

Linky

They're search is very good too and they know their stuff.

Nickp - 30/9/13 at 10:41 AM

quote:
Originally posted by Norfolkluegojnr
don't think so as its the uprated seals that allow it to be converted - unless the seals are interchangeable?

here is the first thread on it, but there are loads on there.

Linky

They're search is very good too and they know their stuff.

Ta, will take a proper look later

Volvorsport - 30/9/13 at 12:22 PM

Suck through..... 1.75 will be loads of flow potential

Nickp - 30/9/13 at 12:35 PM

quote:
Originally posted by Volvorsport
Suck through..... 1.75 will be loads of flow potential

That scares me though, fuel through a hot Turbo just seems wrong!!

Norfolkluegojnr - 30/9/13 at 01:00 PM

biggest issue is keeping the air cold. With a suck through set up, you can't use an intercooler (without a lot of work) so warm air is inevitable.

Having owned one and seen the other on a-series engines, I know what I'd rather go for, although a blow through SC set up for a mini is very doable, and provides a lovely torque and power curve.

Some nutter on TM tried a turbo and SC set up, but never got it boosting properly. Interesting idea though.

Volvorsport - 30/9/13 at 02:52 PM

Remind me how spitfires in WW2 cooled their charge ?

Norfolkluegojnr - 30/9/13 at 02:55 PM

very little experience of spitfires.

Bare - 30/9/13 at 04:47 PM

Geeez Blow through! or even suck through... (Didn't realize this was still the 1970's??) ..is just too bloody primitive AND problematic. Can't even imagine an SU holding boost pressure.. reliably. Hell, they barely manage with engine vacuum sucking through :-)
Even If you finally got the thing working.. useably, 5/7 psi is likely the max available, without spending more $$ than the silly car is worth.
Far too much trouble for unimpressive power gains imo.
Frankly I'd be thinking of retro fitting Injectors and a Megasquirt OR upgrading to a car/engine that is a wee bit more moderne and capable of 'more'.

Time for a rethink.. perhaps?

[Edited on 30/9/13 by Bare]

Nickp - 30/9/13 at 05:39 PM

quote:
Originally posted by Bare
Geeez Blow through! or even suck through... (Didn't realize this was still the 1970's??) ..is just too bloody primitive AND problematic. Can't even imagine an SU holding boost pressure.. reliably. Hell, they barely manage with engine vacuum sucking through :-)
Even If you finally got the thing working.. useably, 5/7 psi is likely the max available, without spending more $$ than the silly car is worth.
Far too much trouble for unimpressive power gains imo.
Frankly I'd be thinking of retro fitting Injectors and a Megasquirt OR upgrading to a car/engine that is a wee bit more moderne and capable of 'more'.

Time for a rethink.. perhaps?

[Edited on 30/9/13 by Bare]

Well done, you went to all that trouble to say feck all of any use. Be sure to ask for me by name when you need some sound advice

Nickp - 30/9/13 at 05:45 PM

quote:
Originally posted by Bare
without spending more $$ than the silly car is worth.
[Edited on 30/9/13 by Bare]

BTW - Feel free to slag off me and my daft ideas, I'm big enough to take it

But don't dis' the Monte !!

me! - 30/9/13 at 05:55 PM

quote:
Originally posted by Nickp

quote:
Originally posted by Bare
without spending more $$ than the silly car is worth.
[Edited on 30/9/13 by Bare]

BTW - Feel free to slag off me and my daft ideas, I'm big enough to take it
But don't dis' the Monte !!

I'm with you Nick- ignore him and turbo the Monte, it looks sweet!

Nickp - 30/9/13 at 06:05 PM

quote:
Originally posted by me!

quote:
Originally posted by Nickp

quote:
Originally posted by Bare
without spending more $$ than the silly car is worth.
[Edited on 30/9/13 by Bare]

BTW - Feel free to slag off me and my daft ideas, I'm big enough to take it
But don't dis' the Monte !!

I'm with you Nick- ignore him and turbo the Monte, it looks sweet!

owelly - 30/9/13 at 09:42 PM

Another gem from Bare. I think we're all used to his posts.

Use two 5GTT carbs? Or stick a 2" SU ( or any other carb) in a sealed box with a balance pipe to a fuel reg.

Nickp - 1/10/13 at 02:53 AM

quote:
Originally posted by owelly
Another gem from Bare. I think we're all used to his posts.

Use two 5GTT carbs? Or stick a 2" SU ( or any other carb) in a sealed box with a balance pipe to a fuel reg.

Yes mate, he does seem to have previous!!

Anyway, 2 x 5gtt carbs? That's not as daft as you look

The old wheezy n/a 1.4 Reno maybe made 70bhp whereas my 2.0 makes 150bhp, so 2 STD carbs makes perfect sense. They could work like a twin choke, only independant. It'd just be how to mount them on a single fannymold and make a linkage work?
Btw - Froggy's got a T25 Turbo off his old Saab that I can have to try

Norfolkluegojnr - 1/10/13 at 07:43 AM

quote:
Originally posted by Nickp

quote:
Originally posted by owelly
Another gem from Bare. I think we're all used to his posts.

Use two 5GTT carbs? Or stick a 2" SU ( or any other carb) in a sealed box with a balance pipe to a fuel reg.

Yes mate, he does seem to have previous!!

Anyway, 2 x 5gtt carbs? That's not as daft as you look The old wheezy n/a 1.4 Reno maybe made 70bhp whereas my 2.0 makes 150bhp, so 2 STD carbs makes perfect sense. They could work like a twin choke, only independant. It'd just be how to mount them on a single fannymold and make a linkage work?
Btw - Froggy's got a T25 Turbo off his old Saab that I can have to try

The 2" in a sealed box actually makes good sense. Depends how much space you've got though? and I guess if you're going to the bother of that, its worth looking at using a TB and injection.....

Nickp - 1/10/13 at 09:33 AM

Been doing a bit more thinking (dangerous I know!!) and am swaying more and more towards the 2 x R5 GTT carbs. I already have a twin dcnf manifold so 2 adaptor plates could be made to mount the single choke carb in place of each dcnf. So 1 carb feeds 2 cyls each and a Y piece feeds the carbs from the turbo via a chargecooler (Toyota GT4?). If this setup is OK but I want to improve it with FI later then all I'd have to do is replace the 2 webers with bike throttle bodies probably from a V twin with injectors built in. I can see issues with getting the carbs to work in sync, but where there's a will there's a way

whitestu - 1/10/13 at 09:51 AM

Have you thought about fitting bike carbs and turboing?

The carbs are cheap and lots of carbed bikes have been successfully turbo'd.

Link

Stu