Crazy question alert!!

[larby]

Ok, so I've got a project on the go which requires a merc v6 on it's back, ie with the crank horizontal, not vertical. Suffice to say it's not going in a boat!

Ive got a few 2.0 motors spare from my powerboat days which I'd like to use for development (no point buying expensive 2.5 kit until I've got it all right!) I've got both 2.4 and 2.5 based 2.0 powerheads.

It seems efi would be the logical way to go. The standard carbs are obviously an issue without making an adptor manifold to hang them out the side!

I've also got a full 240 sportjet efi setup (minus a reed block which I need to source!) which seems it may be an option to fit. Don't worry, I get it that I'll need to do some fiddling, but I'd imagine I can get the fuelling into line for the 2.0 using fuel pressure initially. If needs be I can always convert to a full MoTec setup in the future, but for now I'd like to keep it simple if I can!

Does anyone on here have experience with retro-fitting this sort of EFI setup onto previously non-efi motors? Does a standard merc v6 setup have the same firing pattern etc as the sport jet?

This is likely to turn into a rather involved project, but for the time being I'd like to just get something relatively cheap and simple together to get started with testing, so the above combination seemed like a good way to get there.

To save me some time trying to work everything out from scratch, finding issues as I go etc, does anyone have any worthwhile advice to give? Anyone with experience of this sort of conversion?
Hoping for a little guidance to get me heading in the right directions as there's an incredible amount of knowledge already out there!

Thanks,

James

[XstreamVking]

There was a group of guys that made a 1/2 scale or so formula racecar with a v-6 merc for power. Think they laid the motor on it's side and twisted the carbs on a custom intake adapter. Might still be on the web somewhere....

[j_martin]

Sand dragsters do it too.

[larby]

Thanks for the info guys! I'd heard it had been done a few times, as far as I'm aware the sand boys use 2.5EFI motors, which makes it all somewhat easier! I just don't want to put that sort of money into the first motor I use as I intend to 'explore' Rev limits, compression etc to see what sort of power can be had when it's not on a boat.

interesting to hear the scale F1 guys used carbs and an adaptor system, I could go that way I suppose but liked the idea of getting the injection system on there.

Has anyone on here retro-fitted 240 sportjet injection onto another 2.5 or 2.0 powerhead?

Cheers, James

[Go Time]

James, I'll take a stab...as long as you have a horizontal reed block (front half) any of the small block (2.0,2.4 &2.5) XRI EFI systems should work. You just need the right intake for your block application (5 peddle, 7peedle, etc). AND you will need to orient the VST vertical or eliminate it. The trick will be getting the ECU that is best for your operating parameters. That said. I would invest in a Brucato programmable ECU ( and you may need the software) that will permit you to dial in the EFI system.

[larby]

Go Time - thanks for the reply, now we're talking!
My plan would be to eliminate the VST, can't see a use for it in my application. Will just run a Bosch 044 pump and automotive style fuel system.

My 2.0's have the horizontal front half, though I do need to locate a reed block for the sportjet efi setup I have, along with a workshop manual to work out where all the wires go!

I was just looking into the Brucato PCU/ACU this morning having figured this would be the easiest way to get it running right, easier than going MoTec from the start.

Cheers, James


James, I'll take a stab...as long as you have a horizontal reed block (front half) any of the small block (2.0,2.4 &2.5) XRI EFI systems should work. You just need the right intake for your block application (5 peddle, 7peedle, etc). AND you will need to orient the VST vertical or eliminate it. The trick will be getting the ECU that is best for your operating parameters. That said. I would invest in a Brucato programmable ECU ( and you may need the software) that will permit you to dial in the EFI system.

[tlwjkw]

I've seen two sand rails.. one with a BP/laser set up like pro stock, rotated 90 degrees.. tha other was a drag with horn straight up.. think J. Smith built tha motor for it... several years ago!

https://www.google.com/?gws_rd=ssl#q=v6+mercury+outboard+sand+rails

little bit here also...

http://www.screamandfly.com/showthread.php?5343-Mercury-Outboard-Car/page2

[larby]

I've seen two sand rails.. one with a BP/laser set up like pro stock, rotated 90 degrees.. tha other was a drag with horn straight up.. think J. Smith built tha motor for it... several years ago!

https://www.google.com/?gws_rd=ssl#q=v6+mercury+outboard+sand+rails

little bit here also...

http://www.screamandfly.com/showthread.php?5343-Mercury-Outboard-Car/page2

Brilliant, thanks for that! I had spotted the thread you posted and was hoping to get hold of Steve Jangaard but it seems he's moved on to new pastures, as have most of the people who attempted this sort of stuff!

Thanks again for the help,

James