J30a V6 Bike Carby Engine Build

[Kakapo76]

I found this one in good old Sharkey's aka Silvester V8 Performance in Christchurch- its a Mallory- full mechanical advance- they pulled it off the shelf and the advance on moves when it's rotated counterclockwise and not when rotated the other way.- so I think its the go- there is no choice out there and everything from the States is super pricey.

http://www.silvesterv8.co.nz/products.php?product=Dual%252dPoint-Distributor-Ford-V6-3.8-Litre

[Kakapo76]

Hey Jeff,

My engine seems to have the ring gear on the torque converter not the flexplate ie it's missing... did you use a different ring gear on your v6? If so what did it come off?

[Jeff B]

Look at running it off the front or toothed belt on the drive block if your stuck. 
Jeff belt drove one on his second build but not my cup of tea

That was on build # 3 mohawk....
Get with the times....

[Jeff B]

Hey Jeff,

My engine seems to have the ring gear on the torque converter not the flexplate ie it's missing... did you use a different ring gear on your v6? If so what did it come off?

Most of the Hondas are like that
I used a flywheel. One off a k20 or k24 bolts on

[Jimmy Jet]

I think you'll get a Pertronix electronic kit for that to convert to electronic unless you like points.

[Paul]

might be able too flip over weight plate but not ideal

I checked a spare Chev HEI earlier, and the plate the weights sit/slide on is not symmetric (-on mine anyway).  If the weights were flipped over, I don't think they would be supported properly and may not move properly.

[Warwick Marflitt]

V6 Mitsi or 6 cyl Datsun 240z

https://www.trademe.co.nz/motors/car-parts-accessories/mitsubishi/other/listing-2479407829.htm?rsqid=ffa027810124462ab9718c0b32820492-007

https://www.google.com/search?q=mitsubishi+2.5+v6+distributor&client=firefox-b-d&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjTkM2SmP_mAhVHfX0KHW8qDHwQ_AUoAXoECAwQAw&biw=1093&bih=480#imgrc=iRGKg73E2QJmVM:

[Jeff B]

Which v6 Mitsubishi was carburetted Warrick?

[Kakapo76]

Hi Warwick- thanks for the info- I had a quick look, these all look electronically advanced?

[mohawk]

yea i think they were.... i spent alot of time searching and it was ford or jeep for the win..... or a v12 and use every second hole .

if you used a v12 dizzy with no advance and spliced the plug wires so each plug got fired twice it might work. 
the second spark would be 30 deg advanced if the first was at 0 .

[Jeff B]

yea i think they were.... i spent alot of time searching and it was ford or jeep for the win..... or a v12 and use every second hole .

if you used a v12 dizzy with no advance and spliced the plug wires so each plug got fired twice it might work. 
the second spark would be 30 deg advanced if the first was at 0 .

No mohawk that wouldn't work, would be 60 deg as dizzy rotates at half crank speed so 30 deg on dizzy is 60 deg on crank.
You could 2x 3 cylinder dizzy...one on each head...
No don't try that Kakapo...

[Warwick Marflitt]

Which v6 Mitsubishi was carburetted Warrick?

Sorry Jeff I don't remember. I Thought the first of the Mitsi Diamante where a mechanical advance dizzy. Sorry if I put you guys crook.....(I was up at 4am to check the Cray Pots)

OK so the British triumph 6cyl, Zephyr n Zodiac 6cyl, Volvo Penta 6cyl and Datsun 6cyl engines all had anti clockwise mechanical advance distributors. You will need to get them graphed (Set the advance curve) to suite the Honda for initial, mid range and all in Max Mechanical advance. this is done on a Distributor advance graph machine
Ford v6 Holden and Valiant In Line sixes are all "Clock Wise" rotation that I can see.......
This will be a fun project for sure


THESE MACHINES ARE A COOL BIT OF KIT AND FUN TO USE

[Kakapo76]

Making some progress.

Got in touch with a very nice chap that has a j30a carbed and dizzied in his 4.3 Alloy Boat he took a good 4.3 Chev v6 out (heavy as sin) and swapped in the Honda. Using a Weber side draft and the dizzy below and triggering the vtec he said it goes awesome- much lighter, quieter and idles better. he also mentioned that the install was super compact and the whole boat is better balanced and once you turn up the advance the j30 responded massively (its very conservative from factory) and he believes it has better than factory power- he is a mechanic and owns a garage so good enough for me.

I have finally nailed down a dizzy- going to use this one. (see pic) It fits Triumph/ Jag/ Ford 6 cylinders and is mapped correctly. This is what he used and it worked straight out of the box.

I am also going to get a ring gear welded to my flex-plate- its the cheapest, lightest and simplest option about $150 all up machined and balanced.

Because Honda used the same block in their outboard motors (200-225hp models) they have a very compact fully jacketed cast alloy manifold that almost bolts on- I will need to make a sandwich plate to make it work which means an additional gasket but they are pretty cheap second hand in the US and way easier/cheaper than me tig-ing up cast alloy elbows (which are stupid expensive btw) Also they have a port for an o2 wideband so tuning will be that much easier. See pic below.

[Jimmy Jet]

If the outboard uses the same block why do you need the adaptor plate? Still a pretty good option for manifolds though.

[mohawk]

A blown up OB could supplie ecu and all you need too run couldnt it ?