Go Back  Offshoreonly.com > Technical > General Q & A
AFR 325 flow sheets.... anyone ever flow these heads? >

AFR 325 flow sheets.... anyone ever flow these heads?

Notices

AFR 325 flow sheets.... anyone ever flow these heads?

Thread Tools
 
Old 04-23-2017, 06:45 PM
  #721  
Registered
 
Join Date: Apr 2006
Location: Toledo Oh
Posts: 10,061
Received 693 Likes on 277 Posts
Default

Originally Posted by Full Force
Not trimmed same props as last season so far 5500, saw a drop in pilmpressure I think knits sender as I had zero issues before. ... maybe another wot hit on way. Back 5500 will be 73+ if I let god catch up... I can say throttle response is WAY BETTER. Goes to 5500 instantly no trimming at all
Need bigger wheels now??
phragle is offline  
Old 04-23-2017, 08:47 PM
  #722  
Gold Member
Gold Member
Thread Starter
 
Full Force's Avatar
 
Join Date: Oct 2005
Location: Olmsted Falls,Ohio Marblehead,Oh
Posts: 11,636
Likes: 0
Received 208 Likes on 133 Posts
Default

Ok update as of now...

Gained a solid 2-300 rpm, lake was FLAT and we know how that is with a old straight hull slug, 72.1 was best today with zero tuning, I know there's more there this was first trip out to make sure things ok, oil pressure is dropping so I need to bypass the earls oil stats and make sure that's wats doing that, I never had an issue before with oil... has to be stats

Timing 34
Air fuels 11.5-12.0 at best
72mph@5600for first trip out, boat at best day ever last summer totally tuned went 73@5400-5450rpm totally wrung out so I'm happy so far.

Stay tuned as I tune lol

Yes I have a few drives and one more spare trans gotta keep that stuff on hand the way I run my tird lol
Full Force is offline  
Old 04-23-2017, 08:48 PM
  #723  
Gold Member
Gold Member
Thread Starter
 
Full Force's Avatar
 
Join Date: Oct 2005
Location: Olmsted Falls,Ohio Marblehead,Oh
Posts: 11,636
Likes: 0
Received 208 Likes on 133 Posts
Default

When I say flat lake, I mean flat
Attached Thumbnails AFR 325 flow sheets.... anyone ever flow these heads?-img_3605.jpg  
Full Force is offline  
Old 04-23-2017, 09:18 PM
  #724  
Gold Member
Gold Member
Thread Starter
 
Full Force's Avatar
 
Join Date: Oct 2005
Location: Olmsted Falls,Ohio Marblehead,Oh
Posts: 11,636
Likes: 0
Received 208 Likes on 133 Posts
Default

https://youtu.be/zIaWDygHXCY
Full Force is offline  
Old 04-23-2017, 09:28 PM
  #725  
Gold Member
Gold Member
Thread Starter
 
Full Force's Avatar
 
Join Date: Oct 2005
Location: Olmsted Falls,Ohio Marblehead,Oh
Posts: 11,636
Likes: 0
Received 208 Likes on 133 Posts
Default

Plan was to spin these to 5700 that woukd be about 75-76 mph... I need to see what rpm is after tuning to see where I end up.

Originally Posted by phragle
Need bigger wheels now??
Full Force is offline  
Old 04-23-2017, 10:00 PM
  #726  
Registered
 
Join Date: Aug 2011
Location: US of A
Posts: 526
Likes: 0
Received 1 Like on 1 Post
Default

AFR is about spot on. Weather was better than summer conditions by far. With the porting, it probably won't want any added timing. Rpm went up 200rpm and lost mph with same props? Hopefully there is more speed there with some chop, because I hate to be a negative Nancy critic, but I am struggling to see the "gains" light. Glad the boat is fixed and back on the water tho...
Eliminated572 is offline  
Old 04-24-2017, 04:17 AM
  #727  
Gold Member
Gold Member
Thread Starter
 
Full Force's Avatar
 
Join Date: Oct 2005
Location: Olmsted Falls,Ohio Marblehead,Oh
Posts: 11,636
Likes: 0
Received 208 Likes on 133 Posts
Default

The water was spit flat, that hull was glued to water that is why there is no speed gain with a rpm gain... I am not done and this was a shakedown run, not a tuning session, never even labbed existing props or anything, I am not worried at all, the boat runs what it runs when done, this exhaust can still be an issue also but I do not know yet, there is for sure more power to gain 2-300 more rpm with same props, that's obvious, no failure on my part at this point, so I am happy. again this was a first trip out, to me the gains are going to be there and more importanty hoping reliable..last year I would have struggled to see 70 if that in the water conditions I had..
Originally Posted by Eliminated572
AFR is about spot on. Weather was better than summer conditions by far. With the porting, it probably won't want any added timing. Rpm went up 200rpm and lost mph with same props? Hopefully there is more speed there with some chop, because I hate to be a negative Nancy critic, but I am struggling to see the "gains" light. Glad the boat is fixed and back on the water tho...

Last edited by Full Force; 04-24-2017 at 04:52 AM.
Full Force is offline  
Old 04-24-2017, 04:29 AM
  #728  
Gold Member
Gold Member
Thread Starter
 
Full Force's Avatar
 
Join Date: Oct 2005
Location: Olmsted Falls,Ohio Marblehead,Oh
Posts: 11,636
Likes: 0
Received 208 Likes on 133 Posts
Default

in the end things are what they are, if I boat every weekend I want to, and engines stay in boat for a while I am happy, I am over this whole mess anymore, next step is 420's
Full Force is offline  
Old 04-24-2017, 05:28 AM
  #729  
Gold Member
Gold Member
Thread Starter
 
Full Force's Avatar
 
Join Date: Oct 2005
Location: Olmsted Falls,Ohio Marblehead,Oh
Posts: 11,636
Likes: 0
Received 208 Likes on 133 Posts
Default

Sounds good

https://youtu.be/pB0e1rCUCUs
Full Force is offline  
Old 04-25-2017, 08:28 PM
  #730  
Registered
Platinum Member
 
Hang Time 27's Avatar
 
Join Date: Nov 2003
Location: Annapolis, Md
Posts: 190
Likes: 0
Received 2 Likes on 2 Posts
Default

I was thinking 5,300 was all you got last summer, so that's where my 5,400 came from. 5600 is good Cant remember, how tall are the flame arrestors now?
Hang Time 27 is offline  


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.