500hp into 525efi
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Has anyone converted from the hp500 to 525efi by installing the efi system on the engine.What did you have to change internally if any.Was told just heads and cam.Where can i find the specs on what the 500 and 525 has internally like heads and cam.went to the merc site and it only tells you what the bore and stuff is.
Last edited by docmanrich37; 04-06-2006 at 06:29 AM.
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Yes the cam is different and the 525 EFI uses aluminum cylinder heads made by Edelbrock specifically for Mercrusier. Cam for the HP 500, if carbed, is a Crane 169611. If a HP 500 EFI model then the cam is a Crane 169621. The cam used in the 525 EFI is also a Crane which is, for the most part, a 168741 with 114* centerline instead of the 168741's 112*.
Hope this helps. Go the Cranes website using these grind numbers and get the cam card for each.
Mark
Hope this helps. Go the Cranes website using these grind numbers and get the cam card for each.
Mark
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Originally Posted by GETTINBYE
Yes the cam is different and the 525 EFI uses aluminum cylinder heads made by Edelbrock specifically for Mercrusier. Cam for the HP 500, if carbed, is a Crane 169611. If a HP 500 EFI model then the cam is a Crane 169621. The cam used in the 525 EFI is also a Crane which is, for the most part, a 168741 with 114* centerline instead of the 168741's 112*.
Hope this helps. Go the Cranes website using these grind numbers and get the cam card for each.
Mark
Hope this helps. Go the Cranes website using these grind numbers and get the cam card for each.
Mark
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Originally Posted by stevesxm
are you saying that heads, cam and efi only buy you 25 hp ? am i reading this right ? geeze sounds like the most expensive 25 hp in history.
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Originally Posted by lucky strike
525 efi also has closed cooling
I've got two 525 efi short blocks with 200hrs for sale 1 has a broken valve.
They are 2003 engines
I've got two 525 efi short blocks with 200hrs for sale 1 has a broken valve.
They are 2003 engines
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Originally Posted by lucky strike
You can get the exhaust from Trick Marine, they are CMI Big tube.
My guess would $ 4,000 per engine, ck with Fred @ Trick
My guess would $ 4,000 per engine, ck with Fred @ Trick