(More boating content) Who here is running Ilmor V10 power?

[Runs2rch]

Looking at a few Ilmor 710 (700hp) powered boats. Anyone running Ilmor power? Looking for a little feedback of what you think. Or anyone that has experience with them.

Thanks!

 

[Uncle Dave]

I am I have one in my Lavey 2750 set up for offshore running.

Its a mushroom cloud laying mutherfucker of a naturally aspirated mill with few downsides.

When you look at N/A Marine engines HP per cubic inch almost nothing touches this thing.

That said I just chose to build a NA BBC from scratch.



UD

 

[Runs2rch]

I am I have one in my Lavey 2750 set up for offshore running.

Its a mushroom cloud laying mutherfucker of a naturally aspirated mill with few downsides.

When you look at N/A Marine engines HP per cubic inch almost nothing touches this thing.

That said I just chose to build a NA BBC from scratch.



UD

I hear you. On paper it is one bad ass setup. Sounds like a mix of BBC/Ferrari. What would you say the downsides are? I have never been in a boat with one to know how they pull, cruise etc compared to a BBC with the same HP.

 

[Chili Palmer]

Cons: Parts availability - there are Chevy/Mercury parts everywhere. Mopar, not so much.

Pros: Haul-assability.

 

[Runs2rch]

Cons: Parts availability - there are Chevy/Mercury parts everywhere. Mopar, not so much.

Pros: Haul-assability.

I agree on that. Engine parts availability def. Common parts such as filters, impellers, plugs etc are easy. I have heard of a few guys well over 500hrs on complete stock assemblies.

 

[Uncle Dave]

I hear you. On paper it is one bad ass setup. Sounds like a mix of BBC/Ferrari. What would you say the downsides are? I have never been in a boat with one to know how they pull, cruise etc compared to a BBC with the same HP.

The downsides are the upfront cost - all aluminum V10 with the very best parts cost a lot of bread. Like 50K at the time I bought.

There is only one part you have to worry about the rest is easy to find you can get parts at napa.

The headers are the major unique component - they have a finite life under the best treatment and conditoins.


To make turn key dead reliable pump gas 1.38 HP per cube naturally aspirated - takes exhaust flow and superb parts. - and their is only one source for the headers today and thats CMI- no long lasted manifold exists I know of, and when and if one comes on the scene it most certainly kill HP.

It runs and cruises different than a BBC - if you've ever ridden a yamaha 350 banshee its a midrange and up rush- relatively tame on the bottom but it makes 650FT LB at 3000 and revs to 5900 and holds endlessly - in a rush of power like a yamaha banshee. Its smoother than a v8 - balanced like a sewing machine and can sustain High RPM

One upside is that they typically have 2or more X the BBC's run time before major overhaul. IF you go on OSO they were guys 5 years ago that had 65-700plus hours on them. Its been like a car engine.

The cruise is a dream, The sound is pure sex, at High RMP and with my 100 gallon tank I can do Marina Del Rey to San diego in one hop should I choose to do so.

I run from about 50 to 80 catching up to these fools on either side of me you can see the midrange here even with the might 710 I was outgunned on that run.

https://www.facebook.com/search/top/?q=desert storm

UD

 

[Uncle Dave]

You can hear it howling a bit here. (about 54 seconds in)

Some of me EU Friends put this together - I hosted them after a trade show to a parker trip we had 5 boats on that trip - we really blew their minds with how we play.

Were all heading to the dam In in the blue 2750 and the camera boat is a 22 cole super hawk with a boostpower 502 and bad ass unto itself.

YOU can hear me get into it an pull on them at about 54 on- they shot and edited this so thing they saw as dramatic are always interesting, but it was fun and this clip is kind of neat.

UD


[video=youtube;Ux69vMiRU10]https://www.youtube.com/watch?v=Ux69vMiRU10[/video]

 

[Uncle Dave]

The 710 and 28 evo are a particularly badass combo.

Listen to it idling in the slip. A 710 in a 28 Evo is a 100 MPH boat.

No windmills hairdryers or bottles.


UD

[video=youtube;apWZkv_f4bc]https://www.youtube.com/watch?v=apWZkv_f4bc[/video]

 

[Runs2rch]

UD thank you for all of the information. So you think 800-1000hrs before overhaul is doable? Twin engine boat.

 

[Uncle Dave]

UD thank you for all of the information. So you think 800-1000hrs before overhaul is doable? Twin engine boat.

For a 625/650 maybe a 710 prob not its a hotter version I'd say 650-750 tops, with a header change somewhere in there.

Id say probably more like 650 for it,25-30 % more than the 500 a 525/ 540 typically gets,

- but not the 1K like the 650's can run as they are lighter stressed.

Another downside is that only a few guys on the planet are really trusted to rebuild them.

Outside of the West Coast I really dont know any.

Ilmor- they will fresh them up for you at a premium price but your mill will be cherry. You know they know WTF they are doing.

Boostpower - Alexi can fresh them, or build them up beyond where they are today get 800 fucking HP out of the thing NA with a chunk of money on the rebuild which is an astonishing 1.58 in an NA marine engine. So if you want too know what one set to kill can really do thats it.
He can also build a blown one that will give you 850. Both require an expensive mod to keep rod#5 oiled properly.

Teague, I believe I could be wrong, but I did buy mine from Teague, so Im pretty sure hell rebuild it, but I dont know that he mods them at all.

Merry Christmas.


UD

 

[Runs2rch]

UD how many hours are on yours? They run a Merc impeller right?

 

[Uncle Dave]

UD how many hours are on yours? They run a Merc impeller right?

About 150.

Mine runs a merc impeller in what looks for all the world to be a Hardin Marine pump housing.
I know a few of the early ones didnt add had issues with low Rpm flow.

 

[Runs2rch]

About 150.

Mine runs a merc impeller in what looks for all the world to be a Hardin Marine pump housing.
I know a few of the early ones didnt add had issues with low Rpm flow.

Sounds like a small pulley could cure that? I have a Hardin pump on my 496HO that has been much better than the factory brass piece.

 

[Andy01]

I'm not sure UD covered it. I didn't have time to read the thread lol.

The 710's can make a lot of oil pressure, buy the very best oil filter money can buy. If you don't, it's not if, when it splits if it is at idle or high rpm. I was with a buddy in a Daytona had 710's and the best filter NAPA offered for marine at the time, and his split in the channel at idle. Other then that a great motor from what I have seen over the years. Killer set up in twin engine cats.

 

[Runs2rch]

I'm not sure UD covered it. I didn't have time to read the thread lol.

The 710's can make a lot of oil pressure, buy the very best oil filter money can buy. If you don't, it's not if, when it splits if it is at idle or high rpm. I was with a buddy in a Daytona had 710's and the best filter NAPA offered for marine at the time, and his split in the channel at idle. Other then that a great motor from what I have seen over the years. Killer set up in twin engine cats.

Already planned on it. The K and N made my Donaldson has the highest burst psi and flow. 550 vs a standard Wix is 340. K and N filter flow is 14-16 gpm vs standard Wix 7-9 gpm. I would run a Wix Racing but they do not have one available.

 

[GRADS]

I noticed people posting a couple other videos of how they sound so I thought I'd post this one. The boat passing has twin 710's in it.

[video=youtube;yYqbN4kh3F8]https://www.youtube.com/watch?v=yYqbN4kh3F8[/video]

 

[Runs2rch]

I noticed people posting a couple other videos of how they sound so I thought I'd post this one. The boat passing has twin 710's in it.

[video=youtube;yYqbN4kh3F8]https://www.youtube.com/watch?v=yYqbN4kh3F8[/video]

Kind of close!

 

[HighVoltage329]

I have 450 hours on my 625s without one issue. No oil use and just as powerful as the day I bought the boat.

 

[JRS1939]

I enjoy my 710s. Until I burnt and almost died 😂

But I'll give em another year to make judgement.

 

[Runs2rch]

I enjoy my 710s. Until I burnt and almost died 

But I'll give em another year to make judgement.

What happened?

 

[JRS1939]

What happened?

A little bit of everything. Had some bad luck, a lot of good luck, and in the end just a lot to be thankful for. Started with a pair of vapor locked motors. Non marine starters that were installed before i bought the boat. Havasu, 116 degree day and not much for vents on my engine compartment. Add a little user lack of common sense and I had an explosion...

 

[Rotten deal]

A little bit of everything. Had some bad luck, a lot of good luck, and in the end just a lot to be thankful for. Started with a pair of vapor locked motors. Non marine starters that were installed before i bought the boat. Havasu, 116 degree day and not much for vents on my engine compartment. Add a little user lack of common sense and I had an explosion...

Holy shit. Glad your ok.

 

[JRS1939]

Add to that, me standing between the engines while they were being started....

 

[JRS1939]

 

[Uncle Dave]

Shit man that fucking sucks. so sorry to hear it.

The injection system is sealed so Im trying to figure out how vapor escaped it and fell down to the starter area.

Ive only had be be hard to start once on a 120 degree day, I had to keep cranking it and it fired, every other time it doesn't seem to even need a full revolution before it barks to life.

UD

 

[Uncle Dave]

Already planned on it. The K and N made my Donaldson has the highest burst psi and flow. 550 vs a standard Wix is 340. K and N filter flow is 14-16 gpm vs standard Wix 7-9 gpm. I would run a Wix Racing but they do not have one available.

I run Napa gold in mine as recommended by Teague.

This engine runs a non bypass filter so if you wail on it before the sump is warmed up it could happen.

UD

 

[Devious_Chris]

I loved the 625's in my Daytona......

 

[Devious_Chris]

I noticed people posting a couple other videos of how they sound so I thought I'd post this one. The boat passing has twin 710's in it.

[video=youtube;yYqbN4kh3F8]https://www.youtube.com/watch?v=yYqbN4kh3F8[/video]

You have any video of my Daytona?? My computer crashed and I lost most all pics and video

 

[JRS1939]

I've heard from quite a few people that vapor lock is common on these motors and a slight mixture of higher octane is very necessary in middle of summer.

 

[Andy01]

I've heard from quite a few people that vapor lock is common on these motors and a slight mixture of higher octane is very necessary in middle of summer.

The higher octane cure the vapor lock?
The 710 Daytona I had experience with did it a couple of times. I've been told crack the hatch or cold towels on the intake.

 

[GRADS]

You have any video of my Daytona?? My computer crashed and I lost most all pics and video

I might, let me see what I have. I'm pretty sure I still have the video where my boat walked right by yours and left you standing still.

 

[JRS1939]

The higher octane cure the vapor lock?
The 710 Daytona I had experience with did it a couple of times. I've been told crack the hatch or cold towels on the intake.

Can't answer that yet lol

 

[Uncle Dave]

The higher octane cure the vapor lock?
The 710 Daytona I had experience with did it a couple of times. I've been told crack the hatch or cold towels on the intake.

Dont think so,

I never had vapor lock, my boats been at the river and on all the desert lakes since I got it.

That said my rig breathes really well you can see the three intakes in the hatch.

I was told to throw a wet towel on the top if I did vapor lock.

The problem I did have - or that I should say any NA rig has is that in 105 degree heat you are down on power, and on a cold day its a rocking bastard.


UD

 

[Outdrive1]

The 710's I owned had vapor lock issues a couple of times. That was fun.

 

[TEAGUE CUSTOM MARINE]

The higher octane cure the vapor lock?
The 710 Daytona I had experience with did it a couple of times. I've been told crack the hatch or cold towels on the intake.

There is a fuel pressure regulator and plumbing update kit to return fuel to the tank. Earlier engines had closed loop fuel return to the filter head with a fuel cooler. Problem was the fuel cooler was part of the underslung oil cooler, effectively making the oil cooler also a fuel heater after extended runs! They did have rampant vapor lock issues over about 105 deg air temp. The update to the plumbing does solve the issue. FYI

JT

 

[Uncle Dave]

There is a fuel pressure regulator and plumbing update kit to return fuel to the tank. Earlier engines had closed loop fuel return to the filter head with a fuel cooler. Problem was the fuel cooler was part of the underslung oil cooler, effectively making the oil cooler also a fuel heater after extended runs! They did have rampant vapor lock issues over about 105 deg air temp. The update to the plumbing does solve the issue. FYI

JT

Great info.

Im guessing I likely have this later mod as my 710 was one of the last before the 725 came out.

UD

 

[Outdrive1]

Great info.

Im guessing I likely have this later mod as my 710 was one of the last before the 725 came out.

UD

I think my boat was an 08.

 

[CLA]

I've had Ilmors for over 7 years in two different boats.

625 in a ICC 2005 Eliminator Daytona. Never a problem other than starter and one set of headers in 426 hours. Boat won it's class four years in a row at LOTO. NC1F1 93-97 mph. Never vapor locked.

2each 710's in my 36 Eliminator Coupe. One dropped a valve about 20 hours after purchasing the boat. I sent both back to ILMOR for a refresh 22 months ago. I've put 163 hours on them since then. Hard hours running in Florida in long range runs. Miami to Key West, Ft. Lauderdale to Key West, etc. Only vapor locked on me once. I ran wide open from Gilberts to 7 mile bridge with a 1350 power Outerlimits and 1350 power cig. Stopped at Island Fish Company and it vapor locked.

I can't say enough good about these motors. I'm sad my next boat will not have Vipers.

 

[CLA]

36 Coupe





That's right after I sat the new motors in.

 

[Runs2rch]

I run Napa gold in mine as recommended by Teague.

This engine runs a non bypass filter so if you wail on it before the sump is warmed up it could happen.

UD

Napa Gold is Wix. The bypass will only open in the filter when the filter is too dirty to flow. In a marine app should not ever happen.

51085 is the one you are running right?