What turbo

Discuss general engine, turbo and supercharger conversions in this section

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ed325i
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Post Sun Jun 03, 2007 3:16 pm

Now if I was to go the scrap yard what car would have the best turbo fitted for a e30 m20 ?
I have just been to a scrapy and the are loads of turbo sitting there winkeye
CHRISP
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Post Sun Jun 03, 2007 7:12 pm

Fit NEW that the best 8)
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Post Sun Jun 03, 2007 7:22 pm

Which engine size too? :)
325i Twin Turbo (until 10am 01/12/07 :( )

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ed325i
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Post Sun Jun 03, 2007 9:14 pm

It will be 2.8 m20.
I dont want nothing to mad.
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midnight
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Post Mon Jun 04, 2007 10:29 pm

holset, or garret t4
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Turbo-Brown
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Post Mon Jun 04, 2007 10:38 pm

Yeah, something big which won't strangle the engine :D
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Post Tue Jun 05, 2007 9:23 am

Holset for defo then :cool:

Ed, any cummins 6BT series engine or anything in the 6 to 8.2 litre range, be careful with turbine housing size though, most are 22cm on commercial, you'll want an 18 or 19 to get spool @ 3K

a new holset to suit ( HX40) is £600.00 outright with VAT and shipping
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Post Tue Jun 05, 2007 9:28 am

Holset all the way! :cool:

According to my datalogs I get 3psi in 1st @ 5k, 8psi in 2nd @ 4k, 9psi in 3rd @ 3.5k, 9psi in 4th & 5th @ 3k, so not much lag at all! With a few more cc's you should get a little better response.

Mines a 18cm3 housing by the way but I am running a 3 inch exhaust which DOES help loads with spool up.

HTH, Mark.
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midnight
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Post Thu Jun 07, 2007 10:43 pm

if i swapped to the holset do ya rekon i would have to go 3 inch exhaust or cud i stay with 2 1/2 inch?
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Post Fri Jun 08, 2007 2:05 pm

midnight wrote:if i swapped to the holset do ya rekon i would have to go 3 inch exhaust or cud i stay with 2 1/2 inch?
Try it and see, I went from 2 x 1 7/8's to 3 inch and it made a huge difference.

Thing is you'll need to speak to Ant as we're the only ones as yet to get a 3inch straight through onto a RHD e30.

There's a secret to it but it's not my secret to share :D

Mark.
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