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-   -   Cam Specs for a 525 EFI (https://www.offshoreonly.com/forums/general-q/260254-cam-specs-525-efi.html)

Advantage 575 08-14-2011 08:42 PM
Cam Specs for a 525 EFI
 
What are the cam specs for Merc's 525 EFI

bsboss 08-14-2011 09:25 PM
Crane 16HR00004 BBC Hydraulic Roller
Duration (advertised) - 298/306
Duration (@ 0.050) - 234/244
Lift - .610 Intake, .632 Exhaust
Lobe Center - 114°

Young Performance 08-15-2011 12:23 AM
I have everything else the same except I have the duration at .050 as 236/244, not 234/244.
Eddie

Griff 08-15-2011 01:49 AM
Its a Crane 168741 except ground on a 114 lob sep.
http://www.cranecams.com/product/car...detail&p=24283

Advantage 575 08-15-2011 11:40 AM
Originally Posted by Young Performance (Post 3478809)
I have everything else the same except I have the duration at .050 as 236/244, not 234/244.
Eddie
What max HP can you expect with this cam in a 540 with a 871 blower. Compression is 8.5 and it is fuel injected

Fenderjack 08-15-2011 12:07 PM
That thing will like boost :D


John jr

Young Performance 08-15-2011 01:13 PM
Do you have an intercooler?

kvogt 08-15-2011 01:53 PM
Originally Posted by Advantage 575 (Post 3479166)
What max HP can you expect with this cam in a 540 with a 871 blower. Compression is 8.5 and it is fuel injected
If you have a choice I'd put the Crane XXX651 cam in.

Advantage 575 08-15-2011 07:35 PM
Originally Posted by Young Performance (Post 3479284)
Do you have an intercooler?
Yes whipple MOAC. Cam is a COMP .610 INT, .637 EX 242/248 @ 50. CMI E-tops, DART 325 CC Pro 1's.

Young Performance 08-16-2011 09:54 AM
You have an easy 800+ hp setup, depending on boost. How mush are you looking for?

Advantage 575 08-16-2011 06:17 PM
Originally Posted by Young Performance (Post 3480333)
You have an easy 800+ hp setup, depending on boost. How mush are you looking for?
Currently running 7lbs boost. MEFI 4B WITH MSD Ingenious software. Mock engine on the Dyno was 925 HP. I don't seem to have this. Engines run great until boost, then seem to struggle with RPM. I'm thinking that the boost compensation in the fuel map is to rich. Just don't want to go to lean and have detonation. Do you think the Crane 651 cam would be to much and inhibit reversion?

Griswald 08-17-2011 05:44 AM
are you tuning with wideband o2s? You should be able to see if it's running rich in boost and adjust the fuel tables accordingly


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