Simple Api have just rebuilt my 2.5 engine and 6 speed gearbox using forged pistons,steel rods etc.At the moment it has a TD05/06 20G doing about 380 bhp what is the best turbo to reach a comfortable 450/450 .Obviously I want quick spool up and the boost to hold steady up to my 7200 rev limit.
cheers

 

Everyone is geting great results with the MD321T at the moment. 450bhp Turbo.

 

bing

 

Agree with the above and for price, it is unbeatable!

Banny

 

Scour NASIOC. Plenty Superzilla's and FP turbos there, dirt cheap.

 

rcm gt35 p20 has shown over 450

have been told its not a million miles away from a md321 T by design

 

MD321T no question, Come here and drive one that we did a week after yours Darren.

David

 

As above , Ive got same turbo on my 2.5 , Its 451 /480 , Very good road car , And OK for the few odd track days ?? LoL cheers Alan.

 

Hi David, this is all your blasted fault anyway,you gave me ideas !!!

NB DO NOT GO INTO DAVID'S OFFICE at API HE WILL HYPNOTISE YOU AND MAKE YOU SPEND OODLES OF CASH.
YOU HAVE BEEN WARNED.

PS Perfect service from Martin and the lads on saturday and that Evo battery is the dogs danglies

 

cheers Alan.

 

BUT, I do do it with a smile and a bacon sarnie - that must count for something surely.

David

 

Bacon sarnie????
All I got was loads of tea and a oil cap
bacon sarnie,bacon sarnie,bacon sarnie!!!!

 

Sorry for going off topic, but nice car and spec you have there burns

 

cheers

 

Sorry, for jumping in on your thread but what's the MD321T like on a 2.33 with a target of 450 bhp?

 

MD321T sounds like the popular choice but I am considering the TD06-49 for my 2.5 to get to that sort of target figure if not slightly higher

 

I thought the 321T was better for spool and to the red line then TD06-49 .

 

It depends on who you speak to as always.

 

Ive had both on my 2.5 STI the md is better , for me and my car anyway ?????

 

Foolish if you ask me.

Having driven a newage, like yours, with a 2.5, and a TD06 49lb i thought it was very impressive. That was untill said owner of the car decided he was fitting a MD321T.

How can i put this, THEY ARE LEAGUES APART!

The 321T hits you so hard, its unbelievable. The torque availability is phenominal compared to the TD06 49, and that is coming from experience of both turbos on the same car and engine, with the same mapper, mapped to the same criteria.

md321t-1a.JPG @ Fotopic.Net

Get a TD06 49 to do that, and i will be impressed.

 

That would be APi's turbo of choice on that engine too!

David APi

 

Is the MD321T a twisted or 'regular' installation, and does it have an external waste gate?
from my novice veiwpoint, that graph looks like a very drivable delivery rather than a crude boost build crashing into action.
Am I right?

Finally, is the turbo best optimised for a 2.0 or 2.35 or 2.5? (in theory at least.)

Graham (with a 20g boat anchor?)

 

How would the GT30 or GT35 compare to the MD321T? From what I gather the GT30 is good for about 450bhp also, is its spool up poort?

 

standard postion graham
comes supplied with braided lines etc etc

i got 1 on my ej25 as well

being mapped saturday , can't wait , only running actuator boost at the moment and 6000 rev limit
done 1300 miles now so its time for THE map

 

the turbo has done cracking results on both 2ltr and 2.5ltr but it has gained say 60lbft on the 2.5lt over the 2ltr, the turbo is a standard position fit but im not sure if it can be purchased with an external wastegate ???

 

Aye, been there with the tea and the oil cap!! No sarnies for me neither. Mind you, I did get a WRC keyring too!

I have an MD321T on my 2.5 and it saw 452/477 at the last mapping session. Got to be the one to go for with those sort of figures.

 

Not been on here much recently.
Who makes the MD321T and how much are they going for?

 

lateral performance

 

TerryB - 2 litre - 450bhp/420lbft at 1.8bar iirc
Paul Crafts - 2.35 - 460bhp/515lbft at 1.8bar iirc
Alan Bell - 2.5 - 451bhp/484lbft at 1.7bar iirc

The above are my vague recollections of different engines on the 321T, each engine having appropriate extras, but some with more than others.

Graham, Alan's car is so so so easy to drive, it does build nicely in the higher gears (you can come out of 30mph corners in 6th if you wish, with very little effort), however, that same torque profile in lower gears, means it may brake traction fairly easy. The same corner in 3rd or 4th, will have you going sideways

The 321T sits in the standard position, has an internal wastegate, its literally, plug and play.

Steven

 

As Steve said, Lateral Performance 0208 4205444