top end rebuilds for 500efi and 496ho ?
 

from what I've read it looks like normal maint. to rebuild the top end of a 500efi @200hrs , does the 496 ho require the same thing or are they not prone to as much maint. ?

Re: top end rebuilds for 500rfi and 496ho ?
 

26 Sonic Iwas told same thing.Ijust pulled heads off my 2000/500/efi The head gasket was about to blow Iwas told Iwould need valvesprings also.The engine has 210 hrs on it.

Re: top end rebuilds for 500rfi and 496ho ?
 

HP500's need checked @ 2-250 hours ....

Re: top end rebuilds for 500rfi and 496ho ?
 

500efi rebuild??? no just need to change the valve springs at 200-250 hours, :D I changed mine at 275 and had a broken inner spring and didn't know it, ran perfect. So yes chane the springs. :evilb:

WILL

Re: top end rebuilds for 500rfi and 496ho ?
 

500 efi = blue = more insurance for me :D

496 = black = less $ :D

Re: top end rebuilds for 500rfi and 496ho ?
 

Correct,,, 500HP-EFI you should look at valve springs every 200-250 hours.

496 does not fall into thta category.

Re: top end rebuilds for 500rfi and 496ho ?
 

got my family +performance boating mag and their feature article this month is top end rebuild 500efi @200hrs that is why I asked this question .

Re: top end rebuilds for 500rfi and 496ho ?
 

The feature article was done on our very own PhantomChaos' 38 Formula. His motors had about 250 hours on them.

Re: top end rebuilds for 500rfi and 496ho ?
 

Heard the same thing over time, and read the same article. The 500's allure is less appealing to me now...

Re: top end rebuilds for 500rfi and 496ho ?
 

Don't think that 500efi is faulty because of the springs,, any high performance motor over 200-250 hours need this done, some real high HPs need it done every season. Its just what you want, more HP is going to be more maint.

WILL :D