Whipple upgrades on 700 merc
 

I'm contemplating doing the whipple upgrades on my 700s . I would like to hear from members that have done these mods on the Good ,the bad and the ugly .

Just wondering, why not consider a twin turbo kit? I'm swapping from blowers to turbos because; it's cheaper in the long run, won't raise under hatch temps, and gets more power to the prop with less wear and tear on the motors.

Just curious.

What are you doing for a turbo setup ? in what boat ?

A Whipple upgrade is a couple grand, I'm sure a twin turbo setup is a lot more than that.

Id like to see how that works.

Let us in on that project.

fixx
 

heres your sign!...

having a Twin turbo would be like getting the oil changed on the space shuttle in my area . The boat is a wide load and the nearest dealer that has the technology to service mercs ( properly ) is Double R and they are 4 hrs drive . I want to stick with something that is familiar to the avaerage mechanic .

It's a full kit that takes my 525SC's to twin turbo EFI motors. With the cost of the kit, less what I can get out of my CMI E tops tails, and all of the blower parts each kit should only run me $2,500 out of pocket. That's why I thought this might be a good idea for the OP due to the kind of capital that selling the OEM parts could bring in the aftermarket.

The best part is I am getting away from the tedious maintenance requirements of changing oil on the 177's and the Gen V fuel pump housing. The shop that's supplying the kit and doing the dyno tuning really did thier homework to make this an easy bolt on kit.

I'll have the shop get me the dyno sheets for the stock 525's and also with the turbo kits for comparison.

I saw somewhere these EFI turbo kits are about 12-13k each from Carson Brummet in California. Unless im missing something??

36-39k dollars for new blower systems (triple engine)

525SC blowers with carbs, intakes, pulleys 2000 each used=6k
CMI headers used=1500 pair x 3= 4500 bucks

So, if you can pull 10k out of your existing parts (not easy sell btw), your still looking at 25-30g to upgrade to turbo kits? The stock 525SC bottom ends will be borderline strong enough to support 700HP, maybe 750hp.

If it were me, I'd bolt some 8-71's on, run 7lbs of boost, and be done. The whole upgrade might cost you 5-6k after you sell the stock 525sc stuff. Changing the oil in my blowers takes me 30 minutes and 20 bucks once a season.

Sorry I didn't elaborate on the supplier, I didn't buy the Carson kit. This is a new kit that has yet to hit the open market. Total cost of the kit is $ 8,500.00. Like I said the company that has put this kit together really did their homework. It's utilizing GT35 turbos and can support 1,000HP. The higher HP kit (utilizing GT45's) they have which is a few more dollars can support 2,000HP.

Are you taking about the 700sci? I have the Whipple stage 2 upgrade on my 600sci and and it was the best $2500 I have ever spend on a boat I have had no problems at all and the boat is 10 mph faster and excilerates much harder then stock, it idles and runs the same as stock until you hit the gas, it is very easy to install in about 20 minutes. The 600sci and the 700sci have all the same components except the cam and inter cooler on the 700 is bigger and it has more stock boost then the 600sci.

PRECISION,please tell us more information on these turbo kits.

putting whipples on my 555 motors. Duston at whipple was good to deal with gave me all the help I needed.Any questions they say to call back for help....

DITTO

I have a 600 sci , did the whipple stage 2 kit got 10MPH on GPS with no problems at all . It was well worth the cost . If you have 700 sci motors now I wouldnt take all of that of for turbos.Do the upgrade you wont be disappointed Its easy to install.

There should be some write up about the 488 Skater V ( Tborisch's Tainted Lady) when Ron aka Flight Club took ownership of it... dropped in 700's w/ stage three's I believe - only positive comments from what I recall on the threads of the Skaterfest weekend last year

Thanks for the input , did you do the work yourself ?

Yes but my boat is single engine so it is no big deal getting at the engine, you will be with out a boat for a week or two because you have to take the computers off of the engines and send them to Whipple to be reprogramed.

Hey Whataride, wher in the 1000 islands are u?

I had done the whipple upgrades to my 700. Just be careful the motors are hydraulic rollers don't rev much over 5500. Keep in mind small oil pans change the oil as much as you can. Use good oil as well. Other than that Dustin was great to deal with.

Hill island.

Thanks for the input

That will not be a problem right now , to many ice bergs out there to do any boating

We have done a few and the boats are running solid. We did change rocker arms on the motors also.

Was the rocker arm. And lifter replacement recommended by whipple