575cat

Should I or shouldnt I , just installed Whipple stage 2 kits in my engines 190 hrs should I replace springs , rockers, if so what should I go with on springs , rockers , retainers ? there,s not to much info out there on this .

hustlerguy

I would most definitely replace the springs and rockers.
The crane Golds that are in them are hit or miss with the bearings letting loose or seizing up.
The springs dont have enough seat pressure imo to not float the valve when the blower is pushing on them to stay open.

You got almost 200 hrs on them save yourself some headache and do some preventive maintenance so you dont have to worry about it during boating season.

Looks like you are located nearby me, PM me if you like I can get you the info of who I'd tell you to talk to to help you out.
Otherwise you can always call Eddie Young, or Mark Boos, They will sell you what you need also.

ozarkdevil

Why would anyone put Eddie Young & Mark Boos in the same sentence?
Give Eddie a call, he knows what works. Top Notch!

hustlerguy

If you are insinuating Mark is not top notch... I will strongly disagree!

Neither one of them do anything but quality work and are nothing but class acts.

Griff

The cam in the 700SCI is the same as the 500EFI cam and not that extreme. I would say it depends on how hard they have been run.
I would do leak downs and check spring pressures and go from there.

At almost 200 hrs, its getting close to being time for complete top ends with head gaskets.

speicher lane

Pushing 200 hours - redo the top ends as already advised, and save yourself a sizable repair bill if you drop a valve and down time on the inevitable failure. Water should be pretty stiff in Minnesota right now so its great timing to have the work performed.

BTW, Great upgrade with the Whipple stage 2's!

hustlerguy

Highly recommend the bigger intercooler water fittings and cooler thermostat also.
More boost equals more heat needing more water cooling for safe reliable operation.

fossil fuel

great option......unless you are pushing that additional hp through a merc transmission. The stock trans usually gets neglected and boom. I would vacuum the 1 quart out and change every other oil change, The crane gold rocker arms also must go. I had the needle bearings on two rockers fail and caused me to do a complete teardown on the search for all the remaining needles. Merc does not put screens in the lifter valley so they were everywhere.

hustlerguy

Once top ends are done.
Oil and filter changes every 25 hrs and tranny and drives once a year or every 50 hrs and that's worked well for me.

Can't recommend it enough the crane gold rocker arms gotta go asap!

575cat

Hustlerguy what goodies did you use in yours ? Im not pulling the heads with this many hrs seems to low .