another turbo mini is born, expected power question
Turbo Mini Forums

hey all, the turbo assembly went onto the engine last week and after a few days of sooting the plugs up and turning the fueling down i got it over to collins in erdington and found out it was at 9% at idle, turned it to 3.5% and now it dosent splutter and stall when i pull the choke out from cold

its going on the rollers first thing in the new year, and id like a guestimate of the power it should make,

spec is, 1275 std 9.5cr pistons, turbo head, mg cam , maniflow downpipe and 1 7/8 twinbox system, 4psi actuator, chavalier 1.8 fuel pump, no airfilter yet, and i might lob a escort rs scuntercooler on if i get the chance.

so how may bananas and torques should i idealy be looking at, cheers

95bhp, give or take.

if just the 4psi actuator has been used with no bleed valve will it not be less?

no longer a series, but still 1.3 turbo.

that engine will be at least 18 year old and for sure will be clapped out requiring a full rebuild
dont expect it to be a fire breather ....lol

at 4psi straight of the acuator which is poor! 75bhp if you lucky !!!

i think tom may be thinking ? of the 7psi modulated signal as was in the metro turbo car

the motors a 40k fully rebuilt jobby, ive only got the actuator on it, and a rebuilt box with a 2.9 final drive im not really expecting a lot out of it at 4 psi but i was thinking around 80bhp/torques.
to be honest its the fastest engine ive had under the bonnet to far, it makes na seem like a big waste of time and money really

get a 8 psi actuator the standard setup "ENGINE" is capable of running this boost ..... but no more

will go quite well for you

but i guess you willl wnt more at a later date ... well its all here for you on turbominis

have you any pics of your car ??

ive got some pics on my profile, but no recent ones yet, at least i know what kinda power i should be getting now with that setup, cheers

For a forum offering so much technical expertise on turboing minis i'm surprised to read such a hideous clarksonism as 'torques'

Per-lease; just stick Nm or lbft after the number!!!

The official term for torque on TM is actually curly wurlies, with bananas giving power indication.

This is an acknowledgement by all that rolling road figures are often wildly inaccurate.

On 1st Jan, 2009 knobstar said:
For a forum offering so much technical expertise on turboing minis i'm surprised to read such a hideous clarksonism as 'torques'

Per-lease; just stick Nm or lbft after the number!!!

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

On 1st Jan, 2009 knobstar said:
For a forum offering so much technical expertise on turboing minis i'm surprised to read such a hideous clarksonism as 'torques'

Per-lease; just stick Nm or lbft after the number!!!

Build Thread Click Here

No, though I doubt after an appalling 1st post like that I'll get any answers to any subsequent questions I may ask...

Oh well. Apologies to any offendees.

haha, all questions are answered on here mate!







as long as there not yours.

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

lol.

the reason the turm bananas is used is as a reminder that many rr figures can be taken with a pinch of salt.

err .... ok.... torques and bananas are a lot more fun than broken horse power and pounds to the feet of the torque, the turbo gets refered to as " the fuel economy snail" and "the whoosheywhooshey snail" too!

I agree!!

On 6th Jan, 2009 Tom Fenton said:

On 5th Jan, 2009 MONSTER HEDGEHOG said:
the turbo gets refered to as " the fuel economy snail" and "the whoosheywhooshey snail" too!

Not on here it fucking doesn't.

In the 13's at last!.. Just

sorry, i should have mentioned its mostly my gf that calls it this........ the turbo i mean, i almost convinced her once the turbo was for fuel economy... it almost worked

HEY, i had the car on the the rollers the other week, the first run made about 98bananas and 103 torques..... it tried to stall at about 3.3k rpm and then made the torque in a vertical line, also filled the bay with soot, this was a 8,5k co so we turned it down to 6k co at idle and the second run made 95bananas and 98 torques and it didnt die at 3.3k rpm the curve was a lot better however it was lean at 3.3k rpm ish

out on the road it seems to stuter and kangaroo a bit at full throttle, ive set the timing to 8 degrees instead of 12 now but it still dosent seem to like full throttle, any ideas?

would a high boost needle and some subsequent high boost be a good idea as the current BDD seems incorrect?

Edited by MONSTER HEDGEHOG on 30th Jan, 2009.

Have you got the part throttle lean off pipe connected?

In the 13's at last!.. Just

who set it up Collin? or someone that knows what they are doing with a turbo lump?