Whipple 600sci upgrade documentation
 

This thread will document the Whipple upgrades to my Merc 600sci, along with dyno numbers.
These upgrades will also work on the 662sci and 700sci motors.

As many of you know from my testing posts on props, spacers, and Whipple upgrades, I ended up with a Whipple Stage II upgrade on my merc 600sci. This is a great product, which took my 09 Nordic, open-bow, Heat from a stock 80-81 mph to 91-92 mph with a best of 93.3 on GPS.

For this winter, I pulled my motor out and drove it down to the Whipple compound for R&D on upgrade Stages III, IV and beyond.

For those who don't know... here are the stages of upgrades:

Stage I is a PCM re-program along with a water re-route to the innercooler.

Stage II is the above with the addition of a smaller pulley.

Stage III will be the addition of a Whipple proprietary cam.

Stage IV will be the additon of a 4.0 Whipple supercharger.

Stage V ... yet to be determined

Dustin will also be working on water and innercooler upgrades.

Now for the good stuff:

The stock 600sci made a consistant 579-581 hp at 5400 rpm. This is with the standard SAE correction factor that Mercury uses. -- pretty pathetic!

Next, Dustin installed a PCM with the Whipple Stage I tune that he has been using for the last year or so.

This initially made 669hp at 5850rpm... pretty good for a re-program... but Dustin thought he could do better because the motor was really rich above 5400rpm.

A fuel re-curve in the PCM brought horsepower to an even 700 at 5800rpm. -- Wowser! This is about 120 hp over stock!
Talk about an easy horsepower upgrade!

Tomorow, he will be installing the Stage II pulley and making some more dyno runs.

I will let you know how it goes,

Chris

cool,lets see some #'s . go ahead and start at the top.the 4.0 with a 2.75 top pulley :drink:

Great thread CB, looking forward to more numbers. I have a 600sci as well, thinking about stage2 sometime.
So what is the water re-route on the intercooler for? Was there an issue with temp or pressure?

Hey Chris, This is great info. I am putting 600s in my new active thunder. As soon as the warranty is up i wanted to talk to someone about upgrading mine. Keep us posted. Thanks

Are you planning on proping the boat higher to bring down the rpms or is Dustin saying ok to run the motors at those high rpms (taxing motors) If so to run high rpm than at what amount of hrs. they recommending top end and bottom end refresh

Dustin should be chiming in here soon with some dyno charts etc... he can answer this for you.

But my thought on this is that Merc only making 580hp on a supercharged 502 is pretty darn de-tuned (pathetic). I have made more hp than that on a naturally aspirated 502.

5800 rpm is not really pushing this motor. It is only 400 rpm more than stock.

Chris

What about refresh?:party-smiley-004:

The water re-route was to pull water off the main line right after the raw water pump, instead of off the power steering cooler in order to get cooler water to the innercooler, and thus make more and safer horsepower.

Chris

Here is a video of the 700hp pass on the Whipple dyno:

http://www.youtube.com/watch?v=6BTsMEudtCw

Chris

Picture of my motor on the Whipple dyno:

header looks tarnished? Sounds good:drink:

Good eyes...
The header got tarnished the first week I had the boat because of some cooling issues.

Chris

Stage II should get it to 740HP...

Chris
I have 29ft velocity with a 600 sci iam getting 80-82 on gps all stock.(same speed as yours before your mods.)

Questions
My oversized sea strainer has to outlets with one being plug right now, can i use the second outlet and run it to the innercooler versus adding another sea strainer / water pickup etc . Also to get to 700 hp all i have to do is have dustin reprogram ecu plug back in and go with seperate water line to innercooler .
no pulleys/cam or anything .

Thanks
John

You would have to pick the water up somewhere behind the sea pump. If you get it at the strainer there will be no pressure to force the water throught the intercooler.

Not sure about the pulley.

Thats cool as hell chris.. I watched some guys dyno a 350 race motor and they ran it up to 9800rpms and i thought that thing was going to explode..

So it made 700 with the reprogram and waterline upgrade?

Correct... the motor made 700hp with only the PCM re-program & water re-route. No other mods of any kind.

You do not want to pull the water off the sea-strainer... Dustin has the correct parts in his kits to re-route the innercooler water... very easy mods.

Chris

The new numbers are in for the Stage II upgrade for the 600sci:

752hp at 5850rpm !

This is what you get with just a PCM re-program, a water re-route, and a smaller pulley.

Dustin rocks!

So what are you going run with? Stage one or two.

I will be running stage IV+ :evilb:

I explained the stages in my first post.

Chris

Awesome.....looking forward to the numbers from the Stage IV upgrade.

Update:

Dustin has decided to try the 4.0 supercharger on the motor before doing the cam swap. He just wants to see what we can do with the motor without going internal.
Should be ready for some more dyno passes by mid to end of next week.

Chris

Have you seen the oil filters on the Merc. 700 Stock They are a lot bigger than the 600

Are you going to try to re-prop and bring the RPMS down.
According to the whipple people that makes the motors go longer before a refresh. If so were are you hoping to be with the rpms at the end of the project.

What do you think you boost will be when your done.

Did you say What Kind of drives your running?

The reason I am asking so many questions a friend of mine has suggested that I do and upgrade to my motors.

chris did you put many hour on the boat with the stage 1 or stage 2 before you pulled it out? if so what was the speed at the 2 differant stages and at what rpm do you run in the boat

600 upgrade
 

what rpm is it running with the stage one at 700 hp?

The oil filter on my 600sci is the same filter as on the 700sci.

I will prop the boat for peak horsepower. Stage II is 5850rpm. This is only 450 rpm over stock, and only aproximately 7.5 more rpm per second than stock.
I rarely hold the engine at peak rpm for long periods of time. Most of my boating is done between 2000 and 4000 rpm.

I am GUESSING boost will be in the 8-10 lb range.

I am now running an IMCO SCX drive with a SC lower unit.

Chris

I put aproximately 30+ hours on the boat with the stage II. I had no problems with it . I never ran it with just the stage I. The boat picked up 10+ mph. Stock my boat ran 80-81mph consistantly with a best of 82.6, now it runs 91-92 mph consistantly, with a best of 93.3 mph.

Chris

5800 rpm.

Chris

how much boost did you have with the stage 2

10-12 lbs of boost. Compression ration on the motor is only 7.5 to 1.

Chris

It should polish out pretty easy,keep us posted:drink:

Planning on it while the motor is out of the boat. My family and I used the boat 1-2 times a week for the entire summer. Just didn't get around to it.

I will keep you guys posted.

Chris

chris are saying it had 10-12 lbs of boost with only the stage 2 upgrade

Yes.. 10-12 lbs with the stage II upgrade.

Chris

Great job on the upgrades. What are the differences between the 600sci and the 700sci - cam, intercooler and a smaller blower pulley?

looks good now run it for three hours non stop at wot like merc racing does !

Ran my stage II for 3.5-4 hrs at or near WOT at the OCM, Portland Poker run. I was doing a consistant 80-92 mph, which netted me the honor of being the fastest single engine v-hull at the run.

Dustin knows his stuff!

Chris

Differences between the 600sci and the 700sci:

700 has 3/16 inch taller innercooler.. they add a spacer on top of the 600 manifold

700 has a smaller pulley (similar to the stage II Whipple pulley)

700 has a different cam

700 has a different tune in the PCM

When we change the cam in the 600sci to Whipples proprietary cam (much more technology than the 700sci cam), then the 600 will be basically the same as a modified 700sci with the exception of the shorter (3/16") innercooler. Dustin's water modifications make either innercooler much more efficient than even the stock 700 innercooler.

Chris

Your saying the innercooler difference is 3 1/16 ie .187 ,thats a real small difference?
Rob

The 700 innercooler is aproximately 1/4 of one inch taller than a 600. ie .25" +/-. (I will measure it, and get back to you.) But you are correct, the 700 innercooler is not much taller than the 600.

Since the 700 came out first I believe, I would have thought that merc would of just used the existing innercooler, but I think they were also trying to make the 600 shorter for easier hatch clearance.

Also of significant note is that the water inlet to the innercoolers on both the 600 and 700 is necked down to aproximately 5/16 of an inch in order to maintain water pressure and flow through the engines heat exchanger. Dustin is coming up with kits to drastically increase the flow of water going thru the innercooler. This will require some new parts, some modified stock parts, and a seperate water pickup for the innercooler. Also required, will be some PCM programing modifications to alter the way that the smartcraft system senses water flow and pressure to the motor. The final result will be that water flow thru the innercooler will all be AN-12 (3/4 inch), and a much cooler/happier motor. As of stage II, we are still using Dustin's water re-route kit that pulls innercooler water directly after the raw water pump, instead of tapping water off the power steering cooler (stock). This modification alone has resulted in reduced intake charge temperatures, and the ability to run increased boost pressures.

I hope this helps,

Chris