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Home > Help Needed / General Tech Chat > T2.5 what is required

BA_Lordflash

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Cannock

27th Oct, 2003 at 08:37:09am

WHen using a t2.5 what other mods are needed i.e manifold etc from mirage and the turbo itself. Do you need a diffrent plenium chamber etc ?

Jimster
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455bhp per ton
12 sec 1/4 mile road legal mini

Sunny Bridgend, South Wales

27th Oct, 2003 at 02:04:43pm

Dave, why do you need to use a NA inlet manifold?

Team Racing

On 15th May, 2009 TurboDave said:
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turbodave16v
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SouthPark, Colorado

27th Oct, 2003 at 10:27:49pm

just the way the mirage one was made - the nat asp one has more clearance underneath

Personally, i reckon you get a better (read: more equal) mixture distribution with the horrible 'turbo' inlet manifold, but i guess mirage aimed it at parts that were available off the shelf...

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BA_Lordflash

195 Posts
Member #: 26
Advanced Member

Cannock

28th Oct, 2003 at 12:13:01pm

so the plenium etc is the same excellent. Just what i needed to knwo. So really i can keep everything off the metro turbo and just change the turbo and the manifold. Thansk Dave (yes i did mean the t2 btw just getting mixed up)

Thanks

Vegard

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Norway

16th Nov, 2003 at 08:44:40am

Dave. What you're saying is that if one I have a choice between the N/A inlet and the turbo one, I should choose the latter??

Wouldn't fuel mixture be equal when you get on boost anyway??

On 13th Jul, 2012 Ben H said:
Mine gets in the way a bit, but only when it is up. If it is down it does not cause a problem.

SumpNut
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Milton Keynes

16th Nov, 2003 at 08:08:08pm

I think he means equally shared between the 2 ports, and then to the 4 inlet valves

AlexF2003

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AFRacing LTD

Newbury, Berks

18th Nov, 2003 at 08:47:11am



Wouldn't fuel mixture be equal when you get on boost anyway??


nope the design of the ports, and inlet track doesn't change, niether does the firing order so charge robbing and unequal charge will still occure.

alex

AlexF

Mirage

538 Posts
Member #: 119
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Staffordshire or Northamptonshire

15th Dec, 2003 at 06:16:38pm

Got to agree with what Dave has to say regarding the T2.5, go for the Renault 5 spec T2 unit.

When we designed our manifolds we had in mind that you cant buy the turbo inlet new anymore. We designed it to take MG metro (an late cooper) style inlet and most of the aftermarket ones such as from Minispares. You can still use the turbo one if you have one.

Cant comment on wether the turbo style one has better charge distribution between cylinders as i never ran with one as it didn't look to me like a nice free flowing manifold.

Kean

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aka T2clubby

South Staffs

5th Aug, 2004 at 12:16:08am

Does anyone know if a t2 off an uno turbo is much different from the R5? At a glance the only difference I can see is the length of the output pipe on the compressor housing.....
The exhaust fitment looks the same 4 stud pattern
Hope it fits on the mirage manifold... :)

Mirage

538 Posts
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Staffordshire or Northamptonshire

5th Aug, 2004 at 10:10:19am

Wow this is an old thread.

We now do a hybrid turbo that uses a t2.5 bearing housing and modified t2.5 compressor with a t2 turbine. The compressor is reprofiled and the unit uses a 360deg bearing. These units are built for our application and is optimised to produce around 180 bhp.
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