20 replies to this topic

[megabob]

Hi all,

i've been thinking about boosting my mini for quite a long time and i've always been thinking about supercharging but latley people have been talking to me about low boost turbos.

Does anyone have any info on low boost turbos or any exprence.
Finally i've been tinkering with the idea of a weber turbo but just as a little curiosity, do you think it can be done?

Cheers

[Wil_h]

A perfectly good solution for a highly efficient and moderatly powerful engine. Run 10:1 CR with a nice small turbo and 5 or 6 psi. With propper mapped ignition you could see great MPG and and supercharger like power delivery. Although the smaller turbo will compromise ultimate power.

[megabob]

yeah im not going for silly boost, just somthing for a little extra power on and off the track and a good supercharger kit is around £2k where as a good turbo from ebay is around £200.
could you recomend a good little turbo for my 1293?

[Turbo Nick]

i'd guess at a GT15/GT17 maybe?

[Turbo Phil]

Check out Wils budget Turbo build Here
You could use a Weber, there's a kit available to seal them for blow through use, but it's a lot of extra work & i doubt you'll see any gain over the HIF44, not on a low boost spec anyway.

[JetBLICK]

Check out Wils budget Turbo build Here
You could use a Weber, there's a kit available to seal them for blow through use, but it's a lot of extra work & i doubt you'll see any gain over the HIF44, not on a low boost spec anyway.

I didnt realise ther where kits to seal webers? There is a dellorto thats specified for boosting tho. Not sure i understand the benifits of using a weber type carb with forced induction tho, especially as surely the turbo will act like a big silencer before the weber?

[megabob]

Check out Wils budget Turbo build Here
You could use a Weber, there's a kit available to seal them for blow through use, but it's a lot of extra work & i doubt you'll see any gain over the HIF44, not on a low boost spec anyway.

well i do have a HIF44 and a refurb kit which includes the turbo parts, could i use the kit to convert the standard HIF44 to a turbo?

[megabob]

also could i use my filter king to regulate the fuel or would i need to get a turbo regulator

[Ethel]

Yes you can convert a non turbo Hif, no you can't use a filter king. It's very similar but it doesn't sense boost to up the pressure to the carb.

[megabob]

yeah did a little reading and i noticed that i would need a signal from the plenum to the regulator. well got my eyes on a few good turbo kits.
just a few last questions as their is more air being forced into the engine i assume that i would need a different needle for the carb?

Edited by megabob, 09 April 2009 - 02:07 PM.

[Turbo Phil]

Yes you'd need to profile a needle as any "off the shelf" item is very unlikely to be spot on.

[megabob]

damn i thought that might be the case, its such a pain that there arn't any good classic engine garages only ECU and modern garages around me

[ferrox_666]

On reading Practical Performance Magasine, they turbocharged some old ass Bentley by blowing through its original 2"SU's by pressuring the float chambers and putting a pipe fitting connected to the plenum into the top of a FilterKing regulator to influence the top of the diaphram effectively making it a rising rate type for very little money! Yes it was a road registered car, No i dint think id trust it that much lol.

[Turbo Nick]

damn i thought that might be the case, its such a pain that there arn't any good classic engine garages only ECU and modern garages around me

you can profile the needle yourself if you buy a wideband lambda and gauge. there are some good guides on how to do it over on turbominis now by 'turbo tel' i think.

me and my mate both bought wideband kits and profiled our own needles, only went to the RR for power runs, i think phil does the same aswell?

the price of a wideband is around that of a proper RR setup by a decent garage, but its also a nice tool to keep an eye on so you'll know if the cars ever running lean on boost.

Edited by bud666, 13 April 2009 - 09:54 AM.

[megabob]

i was thinking of getting a sensor so i can read the mixture throughout the revs. anyone know a good make to website to get the kit from?