tnc110

Can anyone tell by this picture if this is really a 525?

jbraun2828

It may be a 525 but not a mercury racing 525

ttuton

Merc 525's use a distributorless ignition as far as I know and that engine has a distributor.

Jfoster

maybe its a 500 efi ?

glassdave

that manifold has been around since early / mid 90's from Arizona Speed and Marine

glassdave

that manifold has been around since early / mid 90's from Arizona Speed and Marine. I always get nervous when I see altered factory looks.

Griff

Definately not a Merc 525EFI or 500EFI. It has the same Intake(made by ASM), but that looks to be about it. Imco exhaust and has older style Merc remote oil filter

thirdchildhood

That is Keith's (Silverback) old Donzi ZX. He did a lot of work on it and it ran over 100 mph. I don't know if that is the same engine but the ad says that the boat has water/flood damage. Here is the ad: http://www.copart.com/c2/individualL...Type=onSaleNow And here is the build thread: http://www.donzi.net/forums/showthre...h-A-Pad-Bottom

Don Johnson

Looks like a centrifugal blower on it, unusual mounting of it but definitely looks like a blower of some sort.

thirdchildhood

Yes, it's blown and was making over 800 hp last I knew.