1150 EF updating project

[lecroy]

Ah, old car parts! Seems like a good source. I would like to see a shot of the intake with TB once you have it mounted.

How did you calculate the required 300cc/min at 200HP?

 

[Blower]

Ah, old car parts! Seems like a good source. I would like to see a shot of the intake with TB once you have it mounted.

How did you calculate the required 300cc/min at 200HP?

By the book : Supercharged ( desing , testing and installation of supercharger systems ) by Corky Bell .
ISBN 0-8376-0168-1
( maximum hp x 0.55 ) / number of injectors = pounds/hour
pounds/hour x 10.5 = cc/min

TB comes in the blower intake not in the intake manifold ( draw through ) .

 

[lecroy]

Seems a bit simple of a model. Where does the 0.55 come from?

I think we are saying the same thing. I assume the TB is mounted to the low pressure side of blower. I would like to see a picture of the TB mounted to the blower.

 

[Blower]

This is from www.megasquirt.info :
Injectors that have too large a flow rating will make it difficult to tune the engine at idle and cruise. Injectors that have too small a flow rating can starve the engine of fuel at full power, and seriously damage your engine. To determine how big your injector's flow rating should be, multiply estimated horsepower (HP) of your engine by the brake specific fuel consumption (BSFC)* and divide by the number of injectors and the desired duty cycle and you will get a rough estimate of injector size:

InjectorSize = (HorsePower * BSFC) / (#Injectors * DutyCycle)

for example, a 135 horsepower gasoline fueled 4 cylinder engine with 2 throttle body injectors and 0.55 brake specific fuel consumption gives:

(135 HP * 0.55 lb/hr/HP) / (2*.85) = ~ 43.7 lb/hr

Injectors rated between 42 and 45 lb/hr would be okay in this case.


It will take some time before i have time to make adapter between blower and TB , but when it?s done i will put some pics.

 

[lecroy]

It seems also that you would need to take your HorsePower * BSFC and divide by the nomalized weight of the fuel.

So, for example say your BSFC was 0.88. Say you use the same gasoline I use, Torco MACH 118 NOS, the Specific Gravity is .725 @ 60 deg F. Weight of 1 gallon of water is 8.345404 lbs.

Fuel flow = (HP * BSFC)/(normalized fuel weight), so say 200 * 0.88 = 176 and 8.345404 * .725 = 6.0504. Or, 29 gallons per hour or 0.0080804 gallons / sec. = 30.6 ml/sec. This is the total you would need to flow. Say that you use four injectors, each needs to flow 7.65 mL/sec or 460 mL / minute.

I guess its going to come down to your BSFC number. Where did you come up with 0.55?

Are the injectors from the 505 rated at the 300cc/min with an 85% on-time?

 

[Blower]

From www.megasquirt.info :
*BSFC is the amount of fuel your engine uses to make 1 horsepower for one hour. It is usually between 0.42 and 0.58 at wide open throttle. Normally aspirated engines with efficient combustion processes are at the lower end of the BSFC scale [~0.45], supercharged engines tend to be towards the higher end [~0.55].

Bosch Nr: 0 280 150 200 injector :
300cm3/min (29.0 LBS/HR) (3.0 bar)(43.5 PSI)BMW/PEUGEOT(N9TEU)

 

[Pharkmeh]

holey crap.....

and you guyz have the cheek to say Im hard to understand....

i dont think i saw a post here I could recognise as english....

ffs....:shock:

 

[lecroy]

OK blower, I see the problem. I was thinking methanol for the BSFC numbers. I agree, the 0.55 should be in the ball park. You need to build a little engine dyno next.

 

[Blower]

Belt drive allmost finished .

 

[Blower]

Some new pics :

Parts for blower intake ,

Finished intake ,

 

[Hoomgar]

You do realize that after all this teasing, when you finally have that thing running and hit the track with it, we want a video clip! :twisted:

 

[Guest]

How ya going to route the header pipes around all that extra hardware up front??

 

[Blower]

I?m going to route pipes on left side of engine , between front wheel and
blower intake . Is there any idea to wrap header pipes ?
Maybe next week I have somthing to show .

 

[Throttlejockey]

Something like this? http://www.jscspeed.com/index.html?/univ/thermotec.htm

 

[Blower]

Something like this? http://www.jscspeed.com/index.html?/univ/thermotec.htm

Yes . It maybe holds engine and blower a bit cooler .

 

[robinjo]

How much compression are you going to run? Stock cams? and timing?
Very nice project, different!

 

[Guest]

I am looking forward to seeing this bad boy complete. I just picked up an 1150and have been wondering what to do with it............
Great job for taking on such an extravagant project. So many turbos out there nice to see a blower.
FANTASTIC!!

 

[Blower]

Blower intake with throttle body installed and first primary header pipes welded :

and the rest of the primary pipes :

All primary pipes are allmost same length ( +- 1/2" ) .

 

[Unclesol]

Un-be-leivable !!! NOW I DON'T KNOW WHETHER TO GO NUTS ON MY BIKE, OR LOCK MYSELF IN A ROOM AWAY FROM ALL TOOLS (could be safer).
Not to sideline this fascinating thread, but I am looking for a back wheel (3.5") from an 86 1150, to update the rear end of my 83 750 ES. Any chance you still have the original?

 

[ScottMc1100L]

You do realize that after all this teasing, when you finally have that thing running and hit the track with it, we want a video clip! :twisted:

Hopefully with a full audio track. This thing is going to sound sweet!