Turbo choices for forged engine project

**Wobbly Dave** · Friday 14th September 2012, 14:16

As some of you might know I am in the process of creating a new engine for my C70 ME7 1999 car aka "Betsy".

Anyway just got the S60R manifold sorted & now wondering what turbo to have. Budget is about 1000 pounds. Needs to come in at around 3K rpm.

Currently toying with the idea of a GT28-71R as I don't want something that is too top heavy.

Choice is somewhat baffling - so any tips would be appreciated.

**T5frankie** · Friday 14th September 2012, 14:27

http://www.ebay.co.uk/itm/GT3071R-WG...#ht_2446wt_989
http://www.ebay.co.uk/itm/GARRETT-GT...d#ht_500wt_923

**Mongo** · Friday 14th September 2012, 14:50

Garrett gt3071r for quick spool but roller bearing needs maintanance i went for a t36 hybrid capable of 500bhp and good spool up

**WillT5** · Friday 14th September 2012, 16:07

I would agree with Mongo, i was going to suggest the gt35 but you want a quick spool

Will,

**AndyBohen** · Friday 14th September 2012, 16:14

I used to run a GT2871R on my old 200SX, was pushing well over 420bhp, wasnt laggy at all.
Came in very smoothly threw the revs, and was ideal for not trying to break traction.

**Wobbly Dave** · Saturday 15th September 2012, 11:37

Originally Posted by Mongo

Garrett gt3071r for quick spool but roller bearing needs maintanance i went for a t36 hybrid capable of 500bhp and good spool up

which bit did u hybrid ?

**Volvostorm** · Saturday 15th September 2012, 20:17

Once te GT's have beern fitted with a metal caged bearing, they are as strong as a journal turbo, but with faster spool.

I've had mine fitted with a metal cage.

**jardon** · Saturday 15th September 2012, 21:27

I would consider all of the above as offering great potential.

However, I might also suggest getting your 19t looked at by the likes of Owen Developments. Porting, larger compressor and clipped turbine plus easy bolt on. You would need a robust actuator. This is effectively what I'm doing on a stock bottom end but I would feel more comfortable with forged rods. Bear in mind that you should see 370bhp and 390lbs from a 19t with appropriate supporting mods and mapping. You will get more from the Garrett options but with higher initial purchase, fitting and mapping costs. Just a thought as I know my car feels very different from when I just bolted the 19t on and ran the standard MTE 19t map.