B230 onto an M41 Gearbox

[Colonel Froth]

What kind of manifold are you thinking about making? Anything like the sheet intakes offered on turbobricks?

[Burdekin]

Originally Posted by DJS

I had a good look at it last night Mitch.

I think that it will with very minor mods if any.

The only issue is the release bearing lever. It will need some mods to work with a cable set up. There is also no speedo drive.

Excellent, M90s are easy to get hold of and we already have a couple.

Didn't think about the speedo cable.

[DJS]

Hi,

Yes, very similar but with longer intake runners (for low down torque) and straight, as the engine in my Amazon is upright. No need to curl them over.

Originally Posted by Colonel Froth

What kind of manifold are you thinking about making? Anything like the sheet intakes offered on turbobricks?

[Rick269]

Originally Posted by Khe Sanh

Didn't think about the speedo cable.

Have you though about a GPS Speedo?

This is more than likely the one I'll be getting:

http://www.speedhut.com/gauge/GRM4.5...-and-high-beam)

Our new Revolution GPS Speedometer (with turn signals and high beam) does not require a transmission sensor to operate making installation very easy in vehicles which lack electronic sensor output or for individuals wanting the simplest speedometer hook up.
Features included

Odometer and Resettable trip
5 Htz update for fast needle response and accuracy
Display 0-60 Time and distance in feet.
Display 1/4 mile time and speed.
Show elevation
Peak Recall max speed during run
Current direction heading
Accurate GPS Clock
Current Speed in LCD
Built in Turn signals and High Beam LEDs in dial. Left and Right turn signals and high beam integrated into speedo. Speedometer has 3 wire leads exiting back of speedometer that when attached to 12volts from turn signal relay or headlight relay will turn on corresponding LED.
Hot start satellite acquisition allows GPS speedo to function within 2-3 seconds of power up
Easy hook up- requires only power, ground and lighting and GPS accurately displays speed. included 15' long antenna cord to route antenna to convenient location in corner of dash.
Speedhut Life-time warranty on all GPS speedos.

[Burdekin]

Originally Posted by Rick269

Have you though about a GPS Speedo?

This is more than likely the one I'll be getting:

http://www.speedhut.com/gauge/GRM4.5...-and-high-beam)

Thanks Rick, yep heard of that type of speedo and sounds like one solution.

[john h]

Steve and I are also thinking about speedo drive issues, because we have R-sport instruments (cable speedo) with M90 box.

Steve has found a company which does a conversion. Basically an electric motor which drives a cable at the appropriate speed, based on the electric signal from the later type 240 axle.

I'll post links and more detail when we have looked into it more. Obviously, only useful if you have, or can fit, and electric speedo drive.

Another alternative, if you can find one, would be a M410 164 gearbox. Very strong, O/D, same bolt pattern I think (but upright for B30, not slanted). I also love the M410 gearchange, although others find it too 'mechanical'... you can feel big gears moving through the lever!

John

[Derek UK]

http://www.youtube.com/watch?v=GgHV3v7ZYDM

[random_noise]

That's a cool product. How does it cope when driving through tunnels / valleys though? Is it legal to rely on something like this only?

[Burdekin]

Good point, not sure.

I emailed them to see if they have a product that converts the GPS speed to a mechanical drive, will see what they say.

[salty]

Regarding the m41 to B230 w/ manual transmission, I'm working on the same project. I have a 73 m41, and a '91 b230 w/ the flexplate and crank sensor wheel. I also have the clutch and pressure plate from the 73 which I just pulled out of my car.

My goal is to get this running in my 73 145 on the smallest budget...and learn a few new skills along the way (at least MIG, fluxcore basic welding and megasquirt).

I'm trying to find out the part numbers of flywheels I can bolt up to the b230, which will mate with the 73 m41 clutch I already have.

Megasquirt will need a crank sensor signal. the options I've heard about so far include using the crank sensor attached to the flywheel, or using an adaptor from Yoshifab w/ his CAS wheel and switching to a coil on plug distributorless system. I'd love to do the latter, but my budget says start with the cheaper option and upgrade as I am able. I'm expecting megasquirt can operate w/ the standard b230 distributor.

I'd like to a flat flywheel that works with my existing clutch, and also works with the crank sensor ring. Is that available, or would it be reasonably easy to rivet or spot weld the sensor ring onto an earlier flat flywheel? If it's a decent option, which years flywheels can I search for? Could I use a Penta? They are available on ebay often...