I'm booked in for a forged CDB engine on my P1, will be good for 600 bhp. I'm not after those figures, just good reliable point to point, power. Basically a fast road car not using silly boost levels. Now what TURBO will do the job. Are the Greedy Tdo6 any good, and would a bigger TMIC or FMIC be better. I would say a FMIC, but i'm putting it out there to you guys.

 

You need the smallest turbo that can give you the power that you need, basically...

I've shelled out on an MD321H, std STI ATM., but given some serious forged internals and an ecu to raise the boost to 2 bar, it should do the business, ecu limited to 1.5 bar currently and around 390 bhp.

HTH

dunx

 

On a 2litre engine if you want 450bhp, then it has to be the MD321T and at these power levels I would defo go fmic.

Banny

 

Banny/ Dunx, is it a laggy turbo as thats no good to me or is it a quick spooler which keeps pulling. 450 sounds great, but not at the cost of street level driving.

 

Well if you want reliable street power, stop at 350. Thats quick enough for UK roads I can assure you! On a TD05 16G which is a relatively small turbo you've got plenty to use when you need it. You want 600 bhp out of 2 litres, you're by the nature of what you want, talking about a big turbo. Now if it was 600 bhp out of 4 litres that would be a different story.

 

I dont want 600 bhp, the engine is good for it. Iv'e had a Td05 on a 2.5 wagon before, cant remember which one though. But it made 369 bhp at scooby clinc, but i found it ran out of power at the top end of the rev range.

 

Is this 2ltr or 2.5ltr?

If you want real lowdown driveability you may be a bit disappointed with what anything around 450+ will provide on a 2ltr. 2.5 for road and 2ltr for track..... unless you build a proper 2.5 which will do the track high reving stuff just as well.

Also what is your definition of "silly boost"?

 

Like i stated webby dont go over 380bhp 400max for low boost low down kick ie no lag you're be fine with a 20g or md321t or h depending on engine size on my 2.5 i had a md t, on actuator boost at zens it made 382bhp thats on 0.9 barr and round the ring that was great come in at 3k and pulled all way round you start going over 380bhp get ya money out for ppg or 6 speed then a exedy clutch then some brakes oil cooler,You want me to carry on before you know it ya motor stands you at 20k+ see you in the week kid off to ring sat ......

 

Have to say mine does spool a little later than the VF35 did, but where that clung on to 1.55 bar up to the rev limiter, an MD321H will make 2 bar easy, but as stated the standard ecu can't manage to control it SAFELY without adding a boost controller.

Needs a forged motor really. VF 35 might make 360-ish at a push ?

dunx

 

Agree with Shaun 450bhp on a 2litre is not best for lowdon power but pulls all the way to 8krpm and does not drop of as early as a 2.5. This is the graph for a my car a 2litre on a GT30 hybrid (very similar to a MD321T)



Banny

 

What clutch and gearbox are you running ?

if these arent uprated then the ceiling in power will be caused by them.

 

Nice one Mark, have a good one mate

 

So a Td05 20G or a MD321t or H, it is then. Td05 20G looks like a good low down spooler. What sort of costs are they.

1.Td05 20G

2.MD321t or H.

And whats best for them TMIC or FMIC

 

It's a very subjective thing, but broadly I'd agree with the above sentiments that if you're on a 2 litre and good boost threshold and response is important to you then you're probably gonna have to start to back off about the 380bhp mark. A MD321H can produce near as damnit as good spool characteristics as a VF28 and that is a potential 400bhp turbo, but you'll need deep pockets. Beyond that you'll struggle in respect of drivability IMHO

Personally, I wouldn't want to loose significant amounts of the threshold and response that my VF35 achieves at 340bhp. For a road car you really want decent response and as wide a powerband as possible.

 

H and a big TMIC would be pleasant, T with a FMIC would be ballistic...

Have to say mine "hits" really ferociously, but not so much as to break traction in the dry.
I drive sensibly in wet...

HTH

dunx

P.S> Know nothing about Td's so off now !

 

Nowadays the H and T aren't the only one's in the market to get a quick spooling setup, while retaining good power.

The HS turbo's have had some decent results, and Engine Tuner's T38 hybrid turbo yields pretty good results as well. On Martyn's 2.1 on 97 ron it got around 450/420 at 1.6 bar with good spool as well : https://www.scoobynet.com/trader-ann...engines-2.html

TD05 18/20G are the cheapest out of the lot, and both work very very well on the road, especially with a sprinkle of meth

Just like with alot of things nowadays you do pay extra for "brand" names, just depends on what you personally prefer.

 

Can anyone give me prices on these turbos please

Td06 Greedy and is it any good

MDH312

Td05 20G

GT30

 

Wouldn't recommend the TD06 on anything less than a 2.5 really..

Normally used on GTS' etc..

MD321H = £1500 (Lateral)
TD05 20G = £750 (SC) OR £550 On an exchange basis with Andy.F
GT30r = £800 (SC)

All plus Vat iirc.

 

Cheers mate, i think i'll have a look for a GT30 or a Td05. Im really after quick spool up, so those two will be on the list. Will a standard Td05 do the job or should i use an AF Td05

 

You do realise the above quoted price for a GT30 is rotated and not standard position?!

 

NO, what's the difference. Iv'e just come from an old school 360 escort cossy and ive only done mid range mods on my previous scoobs, so this is my first BIGish one and i want it right, and with a hands on by me, otherwise i wont be itching to get it up and going

 

I have a 321h with a 2.35 @ 1.7 bar, lovely road set up.
Very early spool then goes ballistic.
Glad i did'nt go for the T. because most of my driving is on b roads.
All the other alternative turbo graphs i have seen seem to drop off the torque after peak.
Worth the extra £ imho.

 

30r will be rotated and require an external wastegate. The cost will mount as you need a different set of up-pipes and downpipe to fit as well.

A standard position turbo with a GT30 core will cost you £1300+, but can bolt on to existing up-pipes and downpipe and will be internally gated.

What size engine do you have and what is your perceived requirements for power up... also (as Duncan has said) what tranmission are you running?

 

Fully forged cdb and new standard trans

 

A 321h would kill a p1 box, unless driving it like my granny.

 

As Shaun said rotated is expensive.

Cost effective wise TD05 is a good way to go.

One I know of recently just went for around £450.

 

Also the T36 is a good setup to consider, might be worth pm' Engine Tuner about it, IIRC the price was very competitive in comparison to the MD series....

 

I still think it is gonna be the gearbox breaking before any of these turbos hit potential.

 

OK... you are limited then, unless you think about your transmission (as already stated) the discussion of turbo is pointless to a degree.

TD05 it is then..... though I believe even that could bust your box!

 

a big 16G or an 18G would kill the box wouldnt it?