J30a V6 Bike Carby Engine Build

[Jeff B]

We looked into the honda outboard manifolds but everything was a bit different, ports and bolt pattern/spacing. Will need a nice thick adapter that also feeds water into the manifolds.
If I remember the outboard manifolds were surprisingly cheap brand new genuine? But then you still need hi risers.....

[Kakapo76]

The exhaust side of the outboard heads is a different casting- same on the intake side but has all the water ports added to make water cooling through the heads. pics below.

1st pic is marine exhaust with ports for water
2nd is intake side- same on both marine and car
3rd is exhaust on car version.

[Kakapo76]

I guess then its loom work, electronics and I may as well stay with the car ecu even though its putz

[Kakapo76]

We looked into the honda outboard manifolds but everything was a bit different, ports and bolt pattern/spacing. Will need a nice thick adapter that also feeds water into the manifolds.
If I remember the outboard manifolds were surprisingly cheap brand new genuine? But then you still need hi risers.....

They are cheap- $130 us each new or about $60 kiwi used.

I don't get why you need to run water into the spacer- I am running a closed loop system with a HE so will run a separate feed to the exhaust from the  warm water coming off the HE- I want to seal those ports. The gent in Methven is going great guns with a simple 12mm plate with countersunk bolts into the head and 6 new tapped holes for the manifold to attach to- so far so good. I think he is running a water box style exhaust and  that eliminates the need for hi risers. The pics he sent me don't quite show it.

It will need a bit of careful port work- there is a discrepancy on the ports- they don't space the same but its a matter of careful work with a die grinder to create a nice-ish transition.

I have attached his pics- be nice its not my boat.

[Jeff B]

Yeah I wondered how the single IDF would go to feed enough fuel/air to the v6?  Must go good!
You are right kakapo, you don't need to feed water in through the spacer plate, it would just save drilling holes in the exhaust manifolds.

[Kakapo76]

He's running a scott 7.5 2 stage and with vtec engaged its pulling 5k rpm wot, he's playing with the jetting and reckons there is more to be had- the engine is super de-tuned in the Odyssey and can run much harder, I will probably have to run a much coarser pitch in my bullet.

[Jimmy Jet]

Go the spacer plate! It's been done before and those manifolds are too cheap, compact and easy to turn down.

[Kakapo76]

So I have located a couple of manifolds- great price $100 NZD for the pair- the shipping, however, is insane! $290 NZD is this to be expected?
Coming from the eastern USA.

Anyone have a drop-ship address or something I can utilize- these should fit into a fat shoe box and weigh around 8kg ish.

Any suggestions are welcome- an alternative is i send to my rellies in Canada and wait till I am going back in July?

[Jimmy Jet]

Chev, Lexus or Ford log type manifolds are way bigger, heavier and are around  $1400 NZD. The shipping price does peel the lips off the gums but still not baaaad all up...

[Kakapo76]

yeah feeling a bit of a tight-ass tbh but bit tired of the money pit. I will just have to suck it up.

[mohawk]

does shipping include import tax, gst and crap ?  or just the cost plus shiping cost ?
I just bought a fishing reel off ebay... 200nz and 100 nz shiping and handling on the ebay add.
 there was another 130 nz bucks added for gst and customs at the checkout 

[mohawk]

a blade was 120 including shipping got another 40 bucks added

[MRM]

yeah feeling a bit of a tight-ass tbh but bit tired of the money pit. I will just have to suck it up.

Sign up to youshop and you'll have a us address all of your own

[Paul]

I just bought a fishing reel off ebay... 200nz and 100 nz shiping and handling on the ebay add.
there was another 130 nz bucks added for gst and customs at the checkout

a blade was 120 including shipping got another 40 bucks added

Err, something very wrong with both of those - a 43% rate and a 33% rate.  Also, at $300 and $120, both should have been free of customs charges anyway...

Have a read of: https://www.customs.govt.nz/personal/online-shopping/

[mohawk]

Are you sure thats current paul ?