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Mincy, because only a turbo will do now!

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Mincy, because only a turbo will do now!

Post by mic_VR on Fri Oct 10, 2008 1:50 pm

Right well I'm sure most of you will have seen my car on the forum and I'm pleased to say I'm finally getting on with sorting it into a bit of a 'race look' car..... with a nice little engine upgrade...

As it stands the car is fairly standard, pic!
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Currently done:

All new bushes, new techtontics 'zorst with dual borla's, all new brakes inc. 288 fronts and mk4 rears with redstuff pads & goodridges all round, weitec ultra GT's, schimmel 263 cams and a few interior mods.

Long(ish) term plan is to go turbo and so far I've got a load of pipe work at home and this little lot stored at the beige-boy-wonder's place

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Yes that's right, when I say turbo I mean 24V turbo! cheers

Hoping to get cracking properly on this project after I've finished paying for my wedding (May next year) but I'm still buying odds and ends at the moment, and I'm trying to get as much info as I can to get going nice and quickly.

Time frame is to have it all in and up and running properly for the end of August '09, i know that seems like ages away but I will try to get it sorted before then.

Look out for questions coming your way! Very Happy
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Re: Mincy, because only a turbo will do now!

Post by dirtytorque on Fri Oct 10, 2008 2:13 pm

good stuff.
A year just flys buy with car projects.Well this year has gone quick for me anyway.

Its only twelve paydays afterall.
How is the engine going to be managed?
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Re: Mincy, because only a turbo will do now!

Post by mrbeige on Fri Oct 10, 2008 2:36 pm

dirtytorque wrote:good stuff.
A year just flys buy with car projects.Well this year has gone quick for me anyway.

Its only twelve paydays afterall.
How is the engine going to be managed?
I think Mic is going for some DTA action! I'll let him tell you more about it Smile

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Re: Mincy, because only a turbo will do now!

Post by junkie on Fri Oct 10, 2008 3:50 pm

Im dying to see a 24v turbo, too many people talking about it then bottling it, sod all this factory fit bollox that people want, just get stuck in for unreliable typical Corrado style, after all its why we all love them so much.
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Re: Mincy, because only a turbo will do now!

Post by mic_VR on Sat Oct 11, 2008 2:59 am

mrbeige wrote:
dirtytorque wrote:good stuff.
A year just flys buy with car projects.Well this year has gone quick for me anyway.

Its only twelve paydays afterall.
How is the engine going to be managed?
I think Mic is going for some DTA action! I'll let him tell you more about it Smile

Yarp, standalone management action hopefully. Happy that'll run fine on the DTA but as the engine I've got is from a 53 plate I need to speak to them to make sure it'll run the VVT ok.

Main aim is to be running about 350bhp and similar torque to start with, but no doubt I'll be building up from there.

Junkie, I can see why so many people have given up on the 24V turbo. The R32 has loads of aftermarket bits for it, as does the 12V, but the 2.8 24V seems to be a bit forgotten. At the moment I can only find a couple of spacer gaskets and some uprated head bolts, it looks like everything else will be custom made..... what have I got myself into! Laughing

Lucky old me has a metalwork fabricator in the family so I've managed to talk him into doing a few bits for me. First I need to get the engine in and see what kind of space I've got to deal with.
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Re: Mincy, because only a turbo will do now!

Post by mrbeige on Sat Oct 11, 2008 3:12 am

mic_VR wrote:At the moment I can only find a couple of spacer gaskets and some uprated head bolts, it looks like everything else will be custom made
Might it be worth looking across the pond for stuff dude? Or even Europe? I'm sure I saw a twin turbo kit from a company in Australia for the 24v. I'll see if I can find out the name...

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Re: Mincy, because only a turbo will do now!

Post by m15 vw on Sun Oct 12, 2008 1:48 am

I can't wait to see this all in! It will be fab!


Last edited by m15 vw on Sun Oct 12, 2008 10:05 pm; edited 1 time in total
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Re: Mincy, because only a turbo will do now!

Post by SensibleDave on Sun Oct 12, 2008 1:01 pm

Should be a very interesting project.

I can see it's early days ATM, but what about dropping the variable mani and going short? Depends which turbo you go for, a smallish turbo would boost enough low down to more than cover the loss.

Might be a similar story for the VVT.....
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Re: Mincy, because only a turbo will do now!

Post by mic_VR on Sun Oct 12, 2008 3:05 pm

Well interesting you should mention the short runner Dave, been thinking about the original plastic mk4 manifold and just wondering how it'll stand the boost. Will i be restricted in how far I can push it etc do you think?

I'm happy to go for a smaller turbo and short runner for a number of reasons

1. Throttle response.
2. Spool time and maintaining boost.
2. Inlet pipework routing.

Do you think a GT30 sized turbo over the GT35 that'll kick in lower down the rev range and offer a better reponse and quicker spool etc?

Also the standard inlet manifold has the throttle inlet pointing towards the passenger side of the car which would mean having to run the pipework back on itself and I'll be hoping to run a charge cooler and keeping everything as short as possible.
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Re: Mincy, because only a turbo will do now!

Post by junkie on Sun Oct 12, 2008 3:34 pm

Im sure GT30 and GT35 are physically the same size externally.

Garrett turbos
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Re: Mincy, because only a turbo will do now!

Post by CorradoVR6-Turbo on Sun Oct 19, 2008 11:36 am

the stock manifold wont hold up to much,seen a clip on youtube of the top split wide ope on 15psi...

The turbo size really depends on how and when you want your power band to work from,the GT30 will work well law down and puff out of steam higher up,the 35 will work later and pin you in the back seat hard! but allot of this is dependent on the hot side AR.
Also using the roller bearing turbos will spool up to 500rpm +!

as for head spacers,C2 as do many others sell them mate.

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Re: Mincy, because only a turbo will do now!

Post by junkie on Sun Oct 19, 2008 12:22 pm

Even the GT30's are going to do mega power with the earlier spool.
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Re: Mincy, because only a turbo will do now!

Post by mic_VR on Sun Oct 19, 2008 12:43 pm

So what kind of rpm diff are we talking between 30 and 35? I've only been out in Kev's with the 35 so have no point of reference as to the differences.

I'd like the power to be as progressive as possible but I'm a bit lost when it comes to the technical sizes and specs of the turbos....

all help appreciated chaps. Very Happy
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Re: Mincy, because only a turbo will do now!

Post by junkie on Sun Oct 19, 2008 12:57 pm

Not too sure but if you want progressive then go for the smaller turbo, on a 6 pot i would think it can be mapped to be progressive, not been in Kev's but im sure its going to just come on boost all of a sudden.

On a 20v the GT30 would drive like the GT35 on a 6 pot.
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Re: Mincy, because only a turbo will do now!

Post by junkie on Sun Oct 19, 2008 12:58 pm

Also the good thing with turbos is it drives as good as the mapping.

On mine it can be all and very hit hard, or turn the boost down and its all progressive so you can have the best of both worlds.
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Re: Mincy, because only a turbo will do now!

Post by mic_VR on Sun Oct 19, 2008 1:25 pm

junkie wrote:Also the good thing with turbos is it drives as good as the mapping.

On mine it can be all and very hit hard, or turn the boost down and its all progressive so you can have the best of both worlds.

True, mapping is another thing I've got to learn. Laughing

This is only my second project car I've ever done so I've got a bit to learn. The only other project i've done is I restored a 1967 beetle from floor pans upwards.

Not quite as technical as a Corado though. The more I think about it the more I realise I need to get my head around pale
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Re: Mincy, because only a turbo will do now!

Post by dirtytorque on Sun Oct 19, 2008 2:08 pm

I just tackle things one thing at a time,and just ask for advice along the way.
Its got me this far.Hopefully it will see you across the line.
Alot of mapping is trial and error,but there are some general guidelines you can follow.
You should read the tuning guide on the MS site.
It is instructive no matter what standalone you are going to use.

I'll dig out the link.
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Re: Mincy, because only a turbo will do now!

Post by SensibleDave on Sun Oct 19, 2008 3:06 pm

GT30 will definitely come in lower down. When I talked through what I wanted from my car with Bill Schimmel, his recommendation was spot on. GT3076R with 0.81 trim. The extra urge can be felt from 2200ish rpm and is all in by 3100 (yes I know all 0.5bar of it, well it's sensible Smile ).

Having driven Kev's, the strange thing is his felt easier to drive than mine because the boost comes in that little bit more progressively later on. When you look at the torque curves for both cars, his is about 30lbft higher at 2500rpm than mine.

Shaun (StormchargedVR) has the same turbo as me but running more boost (12psi springs to mind) and you can see by his torque curve how strong it comes in at 3.3k. Boost control could be used to smooth this out though, as already suggested.

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Those extra valves might make a bit of difference though....really depends on how much top end you want too.

edit: Oh and those plastic manifolds will stand over 1 bar of boost, depends on how much you like it expanding like a balloon. If you watch the StormDev charged R32 when revved you can see the manifold inflating!!!
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Re: Mincy, because only a turbo will do now!

Post by mic_VR on Mon Oct 20, 2008 5:30 am

I'd love to have a trip out in yours Dave as a comparison to Kev's. I loved the way Kev's drove (and it was raining when we went out in it) and it felt very sure footed etc to boot.

Originally I was leaning more towards the GT35 but as people have said it seems to change with trims as well as the different turbo's. And the 24V's and the VVT will no doubt make a difference as well.

[mod edit] Moved the question about VVT into a separate thread. Beigy
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Re: Mincy, because only a turbo will do now!

Post by mic_VR on Mon Oct 20, 2008 2:13 pm

Well since I've told everyone I won't be spending anymore money on the car until after Christmas I thought I'd share my new purchase with you lot.... just don't tell the missus! Rolling Eyes

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ProRace 1.2's, only 8kg each.
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Re: Mincy, because only a turbo will do now!

Post by mrbeige on Mon Oct 20, 2008 2:16 pm

Funk me, they are light! afro

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Re: Mincy, because only a turbo will do now!

Post by dirtytorque on Mon Oct 20, 2008 2:19 pm

Lol,I they hidden in the airing cupboard?

They'll do nicely.
Cool
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Re: Mincy, because only a turbo will do now!

Post by Toad on Mon Oct 20, 2008 2:34 pm

they're in the Pink room aren't they?
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Re: Mincy, because only a turbo will do now!

Post by SensibleDave on Tue Oct 21, 2008 12:14 am

Mmmmm.... hidden treasure!
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Re: Mincy, because only a turbo will do now!

Post by mic_VR on Tue Oct 21, 2008 1:09 am

Toad wrote:they're in the Pink room aren't they?

Laughing Nice guess Tom..... although it's a little unfair as no one else has on here has had the pleasure of staying in the pink room!

They're very light, no idea what the original speedlines weigh but I guess I'll need to get some tyres on these and then see the difference. Should be good though!

SensibleDave wrote:Mmmmm.... hidden treasure!

I've got parts all over the place now. Wheels, engines, pipework...... people are going to be so glad when I get a garage....
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Re: Mincy, because only a turbo will do now!

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