how much boost

[prisspringle]

i tryed searching with no luck, roughly how much boost on std ports will you need to get to 250-300 bhp? just woundering if i can find a cheapish supercharger for something a bit different, might keep my mind busy while i\'m off after haveing my tonsils(sp?) out lol.

chris

[88GT-R]

It depends solely on the size of the charger, whether it be pulley or gas driven.

John

[prisspringle]

pulley i\'m looking for a rough psi so i can see what sc i can use, i wouldn\'t mind using a mini one but i\'m not sure that it will make enough psi

chris

[88GT-R]

Its not the pressure you should look for, it is the volume of air produced by the charger.

John

[prisspringle]

well the mini sc(m45) starts to warm more than push more air at 15 psi  .75lL/ rev looking on the mini forums thats about 215whp they seem to think the m62 will push more psi and runs at 1.05L / rev and will make 300whp for them  so the m62 might be a good bet dont feel like pushing a  m45 and risk deting the engine seems safer to go with a m62

chris

[grinder]

the mini one is fine ( i think )

my mate ran it on his 1275 polo and was running about 240 bhp

[prisspringle]

hmmm not sure which way to go m62 with low boost and has the choice of more,tho the mini ones go for very lil on e-bay.hmmm more research....

chris

hows things going stu ?

[Prof]

I presume you still need to use a charge cooler of some kind, as you\'re still squashing air and making it warm !

[prisspringle]

for rather low boost you can run with out( like some vw kits) but its best to espesally with the heat off are engines

chris

[grinder]

he rang a nice FMIC and water injection

kept blowing the boost pipe off the IC though

and chris - im fine thanks

[prisspringle]

i bet it was fun to drive why did he use a 1.3 tho.

chris

[grinder]

it was a stock polo coupe 1275 - thats what he wanted

fully stripped out and it was FAST - a really nice car - he just sold it for the new project

a 82\' talbot sunbeam - that will be stripped and tweaked

[prisspringle]

not supriced it was fast it will have weighed next to nowt!

chris

[Brett]

FYI
A 13BT engine on stock ports using the stock turbo makes around 200bhp atw at around 13psi - I dont have the flow figures but I\'d imagine they are going to be bigger than the mini charger can cope with.
 IIRC Jackson racing do sell a super charger kit for the 13B N/A... wasnt the greatest looking kit though.

[prisspringle]

thats what i have found looking on the mini web sites like i said they top out at around 210-215 depending on mods.

the m62 looks like a better bet somewhere nearer 300 atw seems alot easyer and with a more efficent ( and cooler) flow.

and i can always start with the mini charger and move up so i am not going from n/a power to alot more power. i can see if the set up is correct without spending too much.

chris