supercharging 710 ilmor's
 

does anyone know someone who has done it?

Talk to ilmor first or maybe whipple got one in the work's

maybe Hennessey Performance... Paxton has them for the vipers. I would like to see where this goes!!

Contact ILMOR & speak to Ian. I doubt they'll recommend it. Engines weren't originally designed for a SC but I know Underground Performance here in Charlotte has Turbocharged many a Viper engine. ILMOR is about turnkey reliability & performance so they simply don't offer much beyond OEM but they may have a few tricks up their sleeve they could share.

I'm almost positive Ian's been to Underground during one of his visits to Charlotte.

You are absolutely correct on Ilmor's position. Check out, Don?t Supercharge Your Ilmor Engine.

I did this interview with Paul Ray some time ago. I don't think his position has changed. If he believed post-warranty supercharging of Imor engines was a good idea, he'd probably say it. Supercharging would add horsepower well beyond Ilmor's current maximum offering, so it's reasonable to assume Ilmor isn't protecting its "bigger-power" business. Ray makes some good points in the interview. It's worth reading.

Matt- you're Johnny on the Spot, always able to come up w/ some factual supporting documentation on the subject much like the sound effects / sound bite guy on a morning radio show. You know the guy who has all that stuff at his finger tips. How do you keep up w/ it all??

Thanks for your input even though sometimes it isn't what we want to hear.

i have had one of my motors apart and examined the build, although i think the ilmor is a amazing motor it did seem to have some weak links. if i were to do it i would of corse upgrade those weak links. I'm positive it can be done safely and i too am all about reliability. My real question was if anyone already went threw it, who would of adjusted the fuel curve.

Hennessey and underground both came to my mind also, but what about stryker are they still around? they did some incredible things to the viper heads and if i remember correctly they were in michigan near ilmor.

I'm not familiar w/ Stryker.
To my knowledge ILMOR has experimented w/ some forced induction parts & pieces but never introduced them. Thats why I suggested you talk to Ian. Unfortunately my guess is anything they were tinkering w/ was based on the Gen 4 platform.

You might speak with Craig Wilson of Wilson Marine. Back when they were racing their Ilmor Powered Fountain I believe they did quite a bit of research on the subject.

Why wouldn't it work? Tons of vipers running out there with sc's and turbo setup. Granted many have forged internals added (depending on year), but I don't know much about what ilmor does to the motors. From all my research the vipers are pretty tough and could handle more then 700 hp. Maybe not in a marine app? I don't know.

I'm thinking the sustained 5000-6000 RPM that street cars don't see is part of the problem.

I see.

in the article posted by Matt T. is states the Ilmors are at 10.3:1 compression already so to take any type of additional boost over just a very nominal amount they would need to have compression lowered on them which varies in the difficulty to accomplish....shorter crank stroke, shorter rods, different pistons or different heads, thicker head gaskets or a decompression plate....all of those come with varying cost or issues

plates and gaskets increase the likelihood of failures especially at higher compression ratios which is playing with danger for adding a super charger, head work for compression is a skilled procedure, crank, rods, and pistons means tearing into the bottom end and if you go that route you are basically rebuilding your engine and you might as well "go for it" and then you will be supercharging a former Ilmor engine

texas, you worded it much better than i did in my original post. "I would like to supercharge a former ilmor engine"
when mine were apart i found a great engine but one that seemed to be designed to handle just over 700hp and thats it. I already upgraded my rods and would still have to do pistons and valve train. So i feel I could easily add just about 4 or 5 lbs of boost to wake the motors up a bit. i think my boat would be perfect at about 800hp per side.

SC'ing the Ilmor V10 in a stock form would be unwise. Cars don't run steady state at the higher cylinder pressure levels and constant stress so they get away with far more. The stock engine internal components have trouble living under heavy stress with extra pressure. If one were to build there motor with forged rods, forged pistons then it would be possible if somebody built a kit but that's tough with the closed cooling, etc. The compression is really not a worry with 5-6psi of intercooled boost and 91 octane, slightly reduced spark curve.

SC'ing the LS based engines is a different story though.....

Maybe it has something to do with the stability of the Ali block under boost /high cilinder pressures making the crank flexing the cilinder block ?

Ding Ding Ding! We have a winner! Not sure if this was addressed in the new GEN of motors but that was a huge concern on the previous design and dont believe it was addressed in the latest offering from Dodge. Not really a flaw in the design just the block was designed for a certain HP range while keeping the weight down. That said if you were to keep the boost/hp/cylinder pressure numbers on the lower side I would think you could get could possibly get away with it. It would be a cool piece with a whipple for sure.

Chris dont do it they run great

We have played around quite a bit..........
Good post Dustin and Neil.

Cant leave well enough alone, can we!?!?

Why do I want to say it has something to do with the counter clockwise engine rotation that made chargers a problem to adapt?

I think it would be cool and possible for a price. Have never seen it done but have read on hear about boostpower playing aroumd with ilmors.

What type of supercharger would you use? What cooler?

I would think a procharger would be sweet!

Might as well shoot for 900hp!

Good luck and keep is updated

I can't think of a good reason not to. As long your bottom end is up to the task, and its properly tuned. I don't know if the blocks are weak, but that claim sounds speculative to me.

Heard Boostpower has tinkered a bit but never seen a forced induction Ilmor out there anywhere. Procharger setup.......... :whistle:

Blocks not weak, just have a limit. :faint2:

http://i41.tinypic.com/32zmgly.jpg this is what you need

You have to be careful not to go too fast on speedbumps with that engine on that trailer ,cause you,re going to hit those powerlines with the flame arrester.... haha

lmao..

to bad that motor caught on fire nearly destroying the boat.... and now looks like it was in the titanic

Thats JJ For Ya