LD28 Crank

[Z]

I've got my eye on a LD crank but just wanted to be sure - a LD crank is an LD crank is an LD crank? There are no differences are there?

 

Any other things to look out for would be great fellas.

 

Cheers,

Case.

[peter mc]

the casting number is VO on the LD crank and a L28 crank has 3040 cast in it

[Z]

Okay cheers Pete, it's a whole long motor being parted so I'm guessing it should be fine for a little strokin 

[d3c0y]

I thought your engine was already built?

[Z]

I wish mate, I still have the 2.6 wheezing all over the place! Just thinking about 3.1 but its so much more expensive!

[Ben]

A quick note - be aware that the LD crank runs slightly smaller journals than the gasoline crank (0.005" more bearing clearance, from memory). So... you'll probably want to get it resized to 1st-under (petrol) specs.

[d3c0y]

3.1 is so last week now - all the cool kids are going 3.2L 

 

Just need Peter MC to clear some of his work load so mine's not just a pile of parts  :-\

 

How much was your ITB setup landed out of interest? I'm tossing up between 50mm extrduas and 50 Solexes.

[Z]

Thanks Ben, that is yet another little thing to consider with 3.1/3.2's, think I'll think about turbo or stroker again in the new year, too hard!

 

The 44 Extrudabody ITB's were 2k and prob another 3 to 400 to land them here, Kevin is very good to deal with.

[d3c0y]

Hrrm looks like they might be a cheaper option than getting a set of 50mm Solexs over from japan which is crazy!

[Z]

Thats not a bad idea, specially as you have triples already don't you d3c0y?

[d3c0y]

Yeah i have Mikuni 44s but the trick is you need to get them taper bored (because they are tapered from the factory) which i dont think would be quite so straight forward. 6mm over bore is a pretty badass over-bore in something as sensitive as a carb too. 50s also come with different jet blocks and the fuel circuits are a bit different from what i've read (i have S5 Mikunis). To me boring them out doesnt sound like the way to go, especially if you can buy a carb in the right size and 44s arent even that much more than 40s.

 

The more i look at it the better value those extruda ITBs are. You can get a 50/48mm taper which will flow the air i need and ultimately make more power and be more drivable with the spastic cam. I reckon I will probably end up getting those, run them on a Kameari manifold with GTR top feed injectors. I already have a serge tank so its just a matter of new fuel lines, a VL turbo pump and see what ECU i can get cheap. At $1400 i will have $2k to buy the ecu, pump and fittings with and that will be only just a set of 50mm Solexes, which will have to be cleaned, kitted and jetted. I think i just talked myself into it lol.