fiestaturbo.com

[StreetDragster]

Alright guys,

Ordering a turbo for my car, 2.1 Zetec turbo, running approx 320bhp, similar torque hopefully, GGR focus rs tubular manifold, 7.6:1 CR.

I've choosen the GT28RS and rang up to order it today and got the option of a 0.64 or a 0.86 exhaust housing. Now the bloke on the phone said the 0.86 will flow better at higher rpm than the 0.64, but lag will increase, but its bearly noticable on the roller bearing series of turbochargers.

What do you reckon? I'd prefer the 0.86 as the turbos instock and the 0.64 will take 3 weeks to arrive, but i don't want a car i'm waiting three weeks for the turbo's boost to come in!

All comments greatly appreciated

Thanks

Matt

[alti]

hi!
my mate had a 0,86 in his audi rs2,
but the turbo was very,very lagy,the boost comes ~3500(1,8bar)
but only in the 4,5,6 gear,in the lower gears the turbo was
not quick enough the spool up and gives only 1,1-1,3 bar.


take the smaller one.

[heeman10]

Speak to Ian Matt, no question! He's building your engine, and his turbo knowledge far surpasses ours no doubt! I would've thought the 0.64 would be best, but he will no doubt have more experience to back up his choice. You're not buying from the UK are you?

[StreetDragster]

I have done, he thinks the 0.64 would be adequate for 320bhp, but i may get away with the 0.86.. Humm decisions decisions.

The 0.64 is £255 more expensive and a three week wait than the 0.86, which is avalible now.
Yep, UK supplied, you'ed be surprised at the price though.

Thanks

Matt

[StreetDragster]

hi!
my mate had a 0,86 in his audi rs2,
but the turbo was very,very lagy,the boost comes ~3500(1,8bar)
but only in the 4,5,6 gear,in the lower gears the turbo was
not quick enough the spool up and gives only 1,1-1,3 bar.


take the smaller one.

Hi Alti,

Do you know what turbo was fitted to your mates Audi? Was it a ball bearing?

Thanks

Matt

[heeman10]

Is the turbo the only thing remaining on the build then? I can't think who would be the best people to speak to to get an idea of the differences between different housing on BB turbo's. Maybe find some big tuning outfits, people that deal with Audi's, VW's (eg AMD) and Toyota Supras and the like, they will have a good idea of pro's and con's I would've thought. Is it worth ordering the 0.64 turbo, and cancelling if you find that the .86 would be ok, ie would they accept it as stock rather than charging you for it? Would be a bugger if you spent a week finding out that you needed the smaller one, then had to wait three further weeks.

[StreetDragster]

Its not the only thing remaining, but its one of the items that will take a while to arrive if i order it, so the sooner i order it the quicker it can all move along.
Think i'm going to give ATP turbo a email and see if they can offer any tips/advice, they seem to be in the known when it comes to turbos!
Doubt the shop would take it as stock though so need to get this right before i order really


Thanks

Matt

[heeman10]

Just call/email as many people as possible to get the best spread of advice, and go with the most common response I guess! Call lots of turbo shops, builders, all big-turbo car tuners etc, give me a yell if I can help.

[StreetDragster]

Cheers buddy, will do.
I'm trying to get a quote from garrett at the moment on how much a GT28RS exhaust housing would be if i buy the wrong one and want to change in the future, what a group of real helpful people i'm speaking to so far.



Thanks

Matt

[alti]

hi!


it was a simple watercooled kkk turbo.

but your cr with 7,6:1 give not much torque,
and the turbo begins earliest at 3000-3500 rpm
try the 0,64 one,and you have more torque,better acceleration,more fun.
i was never a friend of ballbearing turbo.
i heard too much bad things about it.
i spoke with a turbospecialist and he mean the life of a ballbearing turbo is very short,he sells 2 ballbearing turbos and both dies with about 5000km.

thanks alti

[turboboss]

i'm running the gt25/40r on my 2.1zvh with the 0.64 rear, mine is rated to 450bhp prefect for my spec unless your looking for in huge!! power 0.64 housing will do, i brought mine from universal turbos speak to vince osborne hes the one who done that write up about turbos in fast ford, one word of warning a lot of the turbos which are brought from the states have been blowing up!! atp are a good copany to buy from if you are going down that route,

[StreetDragster]

Cheers guys.

Its not coming from the states, but the difference between the 0.64 and the 0.86 is around £250!! Guess i'll have to bite the bullet, pay the extra and get the smaller one

Cheers

Matt

[StreetDragster]

0.64 ordered

Cheers

Matt

[heeman10]

[FezzR]

glad you went for the smaller one matt, recon youll find it a drive

[StreetDragster]

Me too, but my wallet isn't!!
But better to spend £250 extra here than find out its too big later on and have to get it changed AND remapped!
Thats most of the expensive parts sourced and purchased, just the dyno-mapping that the last real finacial hurdle.
Realised today that i won't be able to use the standard FRST crossover pipe with the Focus RS GRR manifold i have, bugger, time for more modification and fabrication!!

Thanks

Matt

[FezzR]

Me too, but my wallet isn't!!
But better to spend £250 extra here than find out its too big later on and have to get it changed AND remapped!
Thats most of the expensive parts sourced and purchased, just the dyno-mapping that the last real finacial hurdle.
Realised today that i won't be able to use the standard FRST crossover pipe with the Focus RS GRR manifold i have, bugger, time for more modification and fabrication!!

Thanks

Matt

at the end of the day as far as i can tell you not going for power figures or high speed competition runs,
i would be much more willing to risk the turbo running out at top end (i recon youll stuggle to get it to tail off) than lag at bottom end.

[StreetDragster]

Nail on the head there, i want it to be good to drive, power figures, quarter mile and trackday performance are a byproduct.
Ian thinks it should be good for 350bhp, i expect 320ish so should be well within spec

Thanks

MAtt

[FezzR]

Nail on the head there, i want it to be good to drive, power figures, quarter mile and trackday performance are a byproduct.
Ian thinks it should be good for 350bhp, i expect 320ish so should be well within spec

Thanks

MAtt

id say those figures are engine figures as apposed to turbo max anyway