29 replies to this topic

[Artful Dodger]

100bhp with a swan neck weber manifold...

If the reading is correct (baldwins rollers have been known to read higher than most newer set ups) then you could get a good few more if you get a nice maniflow manifold and match the head to it!!!

What cam are you running?

[WillRunci]

100bhp with a swan neck weber manifold...

If the reading is correct (baldwins rollers have been known to read higher than most newer set ups) then you could get a good few more if you get a nice maniflow manifold and match the head to it!!!

Explain? im a complete newbie to be honest. ive got my car booked in on friday to look at the exhaust. The head has STG 3 stamp on it, ill have to look through the invoices

[Artful Dodger]

the only manifold that will allow you to fit a weber to a mini without the weber box cut into it is called a swan neck. these are terrible and you really do not get any gains from it over a STD S.U carburettor.

if you get a weber box let into the bulkhead and fitted a good 6' manifold, then you would get better power, responsiveness and torque, because of the much better flow.

[WillRunci]

that means creating a box in to the dash area doesnt it. wont that effect the interior elements like headunit etc. sounds like a big job maybe for another time. Im off to minispeed on friday ill ask them what they think. im looking at getting a new exhaust atm, you mentioned Maniflow are they much better then other brands?

[Bungle]

bulkhead mods do require you to rerigester the car and go through a BIVA test


http://www.the-ace.o...e-modification/


unless your one of the lucky people that rules don't apply to

[jb93]

Bungle, I love you.

[Noah]

unless your one of the lucky people that rules don't apply to

Brilliant!

[Artful Dodger]

Maniflow are by far the best, a but costly but worth the money IMO

[ministar]

Yes maniflow are deemed the top mini exhaust system

[mini-luke]

It's got 100 baldwins, not HP. They differ somewhat

Maniflow all the way

[racingbob]

that would be 100 at flywheel

my race engine had 100 at the wheels

and was not realy driveable on the road i know
it was registered as a historic so could test drive it
legally

[WillRunci]

i get the feeling there's some ill words against Baldwins accuracy? any evidence to back this up?

also surely if your talking about a difference in measurement isnt it all relevant?

Update, so ive done a bit of digging, watched a video on youtube of a lad trying to get his mini up to 100bph at minisport. now the results show 100bph norm, engine and 70bhp "wheel" now im guessing the reading of 100bhp is the unit most commonly used when describing the engines power? for example a Works S when leaving JCG was sitting at 90BHP so when the power read by mine was a 100bhp this is the most common way of describing a cars power. any other figure is really just being obtuse?

Edited by WillRunci, 29 October 2012 - 02:09 AM.

[Bungle]

the rolling road measures power at the wheels

when peak power is measured the operator takes his foot of the accelerator and lets the rollers and engine slow down

this slow down sort of measures the transmission loses

the computer than adds the losses to the power at the wheels figure and you get a guesstimate power at the flywheel power

the operator then gives you this power as it's a bigger number and makes you feel better

also to make you feel even better and to make their rolling road sound better than the one down the road the operator can tweak the calibration of the rolling road so the readings given can be a bit high

it doesn't really matter what the power is (although it is handy down the pub) it's what the car is like to drive and the MPG these days that's important


p.s. you still haven't told us how your getting a MPI engine with a big webber carb through a MOT emissions test

Edited by Bungle, 29 October 2012 - 07:42 AM.

[mini-luke]

i get the feeling there's some ill words against Baldwins accuracy? any evidence to back this up?

e.g. http://www.theminifo...15#entry2595268

Doesn't really matter, just makes for better pub talk numbers!

[BritishRacingGreen]

The wheel figure is also not very accurate. You can change the reading completely by altering the tyre pressures. This is why the losses are calculated, and a flywheel figure obtained, so that engines in different cars can be compared.

It will still be dependant on the rolling road, but the wheel figure can be misleading.