Weber for 4M?

[[dB]]

I'm considering putting a Weber on my '74 Mark II.
It doesn't appear that there are any Webers specifically for this engine. What is the most suitable model to adapt to a 4M?

TIA

[79Corona]

That certainly would be hard to say. Have you tried contacting Redline Weber?

[shonuff]

i was bored here at work so i did a lil searchin for you..

www.redlineweber.com - nothing listed for ANY M series eng

www.webercarbsdirect.com - ditto


so i went to wiki to see how big a 4M was http://en.wikipedia.org/wiki/Toyota_M_engine




it turns out that a 4m is 1988 cc or a 2ltr

so i would try a carb and jetting for a 18r 1968 cc, dont consider my words gospel but id bet that toyota didnt use a different carb for the 4m vs the 18r. i would try and find a cheap one to see if it will fit or go to amazon.com and order a adapter for a weber and see if it bolts up.


good luck and keep us informed, you are trailblazing on this one

[[dB]]

Thanks for your efforts, shonuff.

This 4M is actually 2563cc as indicated on the firewall plaque.

My work schedule has been keeping me from trying to call Weber during business hours and for some odd reason, email didn't occur to me right away. LoL!

I got my first response back from Weber, and they did not have a diffinitive answer without more specific info about the existing stock carb.

I will post our correspondence here, so it may benefit others in the future.

Steve

We should know but im not sure really.

The 4 M and 2F as in the landcruser would be my base thought but its
more than likely that the sedan carbs used during that time for the 8
and 18 RC motors is more likely the base carb for the Corona.

I had a Toyopet at one time and that one used the same carb as the 3 and
8 r motor.

So bottom line I would us the 38 DGAS manual or auto choke version that
will offer best function toque and economy with lots of Wow factor for
changing the personality of the little toyota.

It will function more like a new V6.

But to confirm the linkage and adapter options it would help me if you
could give me a tracing of the carb manifold base and or a sketch with
aprox bolt centers for the carb base bolt pattern and a referance to
direction of rotation on the carb linkage cable or rod function from
this I can confirm which carb is used in your application.

and last suggestion if you have a digital camera please take a few shots
of the engine and with carb ( less air filter ) so I can confirm linkage
option.

We have adaters for every toyota application its just a matter of
confirming which your application is using.

If Im guessing it would be the K742-38 , K744-38 or K743-38 using the 38
these carbs use same base adapter and are for Toyotas of that Vintage
both 8,18 and landcruiser.

......

Bud Pauge

Redline Fuel Systems and Weber Carburetor conversions

[shonuff]

bud is a seriously cool guy.


keep up on the info and they will help you out, they helped me rejet my 70's sidedraft which wasnt easy and took 3 tries.

[79Corona]

I know Bud Pauge, and have dealt with him several times. He's a nice guy. The carb might be easy, but the intake adapter plate kit may be tricky if they haven't already developed one.

[808celica2damax]

Originally Posted by [dB]

Thanks for your efforts, shonuff.

This 4M is actually 2563cc as indicated on the firewall plaque.

My work schedule has been keeping me from trying to call Weber during business hours and for some odd reason, email didn't occur to me right away. LoL!

I got my first response back from Weber, and they did not have a diffinitive answer without more specific info about the existing stock carb.

I will post our correspondence here, so it may benefit others in the future.

Hey guys, I'm thinking about getting a 76 Corona Mark II. This information was very helpful, but i'm still wondering, did the adapter plate issue ever get resolved? I wanna know which one to get. Please reply here or to 808celica@gmail.com I really appreciate it guys!
Thanks-

Luke

[[dB]]

Hey 808celica2damax.

This is my first time back in this forum in ages.
The project stalled out for $$ reasons and I never finished the research, but my cash flow is getting back on track and I'm starting to think about it again.