| Author |
Message |
[email protected]
Samba Member
Joined: June 24, 2015
Posts: 719
Location: Rialto. CA
|
|
| Back to top |
|
 |
fl59bug
Samba Member
Joined: November 23, 2005
Posts: 1976
Location: North Carolina
|
 Posted: Wed Feb 01, 2023 3:54 pm Post subject: Re: 40hp 5.140 h beam rods |
 |
|
Very nice - glad to hear of this.
The next time I have to split my big bore 40hp case I'll see about adding a set of these after the necessary measuring, rod bearing refresh and deck height checking.
Ted |
|
| Back to top |
|
|
PEPPE
Samba Member
Joined: August 24, 2003
Posts: 1068
Location: Roma Italy
|
| Posted: Thu Feb 09, 2023 1:42 pm Post subject: Re: 40hp 5.140 h beam rods |
|
|
i had them made 5 years ago , but with 22mm pins. i used them for 85.5 (1470cc) and 90.5mm (1647cc) 40hp kits. i even designed them with offset like the stock ones.
|
|
| Back to top |
|
|
mukluk
Samba Member
Joined: October 18, 2012
Posts: 7023
Location: Clyde, TX
|
| Posted: Thu Feb 09, 2023 4:29 pm Post subject: Re: 40hp 5.140 h beam rods |
|
|
According to their website the rod length is 5.110", not 5.140". Hopefully it's a typo, otherwise they'll be slightly shorter than stock 40hp rods. It may not seem like much, but since their 77mm 40hp pistons already have the wrong height which results in excessive deck, adding in shorter rods means more machining and a narrower engine; now your exhaust doesn't want to fit, the intake manifold needs adjustment/bending, the tinware might need trimmed....
_________________
1960 Ragtop w/Semaphores "Inga" |
|
| Back to top |
|
|
[email protected]
Samba Member
Joined: June 24, 2015
Posts: 719
Location: Rialto. CA
|
| Posted: Tue Feb 14, 2023 6:04 pm Post subject: Re: 40hp 5.140 h beam rods |
|
|
| mukluk wrote: |
| According to their website the rod length is 5.110", not 5.140". Hopefully it's a typo, otherwise they'll be slightly shorter than stock 40hp rods. It may not seem like much, but since their 77mm 40hp pistons already have the wrong height which results in excessive deck, adding in shorter rods means more machining and a narrower engine; now your exhaust doesn't want to fit, the intake manifold needs adjustment/bending, the tinware might need trimmed.... |
I just think its a typo on their part do to the fact you can clearly see their rods on the pictures it does say 5.140 not 5.110 their description is wrong ..... |
|
| Back to top |
|
|
mukluk
Samba Member
Joined: October 18, 2012
Posts: 7023
Location: Clyde, TX
|
| Posted: Wed Feb 15, 2023 10:22 am Post subject: Re: 40hp 5.140 h beam rods |
|
|
| [email protected] wrote: |
| I just think its a typo on their part do to the fact you can clearly see their rods on the pictures it does say 5.140 not 5.110 their description is wrong ..... |
Maybe it's a difference in interpretation, but what I see clearly written on the pictured rods reads 5.1" 40 (note the inch unit marking and space before the 40), not 5.140 without the inch unit marking and space. To me it's conveying the information of a length of 5.1 inches and the number 40 to denote it has the wider big end and 20mm wrist pin small end for use on a 40 horse crank. 
_________________
1960 Ragtop w/Semaphores "Inga" |
|
| Back to top |
|
|
[email protected]
Samba Member
Joined: June 24, 2015
Posts: 719
Location: Rialto. CA
|
| Posted: Wed Feb 15, 2023 11:55 am Post subject: Re: 40hp 5.140 h beam rods |
|
|
| mukluk wrote: |
| [email protected] wrote: |
| I just think its a typo on their part do to the fact you can clearly see their rods on the pictures it does say 5.140 not 5.110 their description is wrong ..... |
Maybe it's a difference in interpretation, but what I see clearly written on the pictured rods reads 5.1" 40 (note the inch unit marking and space before the 40), not 5.140 without the inch unit marking and space. To me it's conveying the information of a length of 5.1 inches and the number 40 to denote it has the wider big end and 20mm wrist pin small end for use on a 40 horse crank. |
OK I've talked to aapistons awhile ago though email ...yeah they informed me that the rods are 5.110 but that the 5.1" 40 on the 40hp rods the 40 was to indicate it was for the 40hp they said that they asked the manufacturer to add 40H but they didnt they also inform me that the rods they measured a while ago were measured at 5.120 and I guess some measured 5. 110 so it looks like they may have had a problem with the manufacturer giving 2 different sizes but 5.120 should be the correct 40hp size .....so they are checking up on this problem ...so maybe it was good to see the miscommunication on their part and the manufacturer and the buyers 👍👍👍👍👍 |
|
| Back to top |
|
|
AA Performance
Samba Member
Joined: March 09, 2012
Posts: 1
Location: Covina
|
| Posted: Thu Feb 16, 2023 11:41 am Post subject: Re: 40hp 5.140 h beam rods |
|
|
| Hey, Dario here from AA! So the rods are all 5.120 just to be clear. They put the wrong number on the website description. And yeah that is correct the 40 stamp on the rods is to signify they are 40HP rods. They should have stamped them 5.120 40H. Sorry for the confusion! |
|
| Back to top |
|
|
[email protected]
Samba Member
Joined: June 24, 2015
Posts: 719
Location: Rialto. CA
|
| Posted: Thu Feb 16, 2023 11:49 am Post subject: Re: 40hp 5.140 h beam rods |
|
|
| AA Performance wrote: |
| Hey, Dario here from AA! So the rods are all 5.120 just to be clear. They put the wrong number on the website description. And yeah that is correct the 40 stamp on the rods is to signify they are 40HP rods. They should have stamped them 5.120 40H. Sorry for the confusion! |
Thanks for the info 👍👍 |
|
| Back to top |
|
|
mukluk
Samba Member
Joined: October 18, 2012
Posts: 7023
Location: Clyde, TX
|
| Posted: Thu Feb 16, 2023 12:49 pm Post subject: Re: 40hp 5.140 h beam rods |
|
|
Good news. 
_________________
1960 Ragtop w/Semaphores "Inga" |
|
| Back to top |
|
|
puchfinnland
Samba Member
Joined: December 26, 2005
Posts: 279
Location: Deale Maryland
|
| Posted: Tue Sep 05, 2023 2:27 pm Post subject: Re: 40hp 5.120 Hbeam rods |
|
|
I will also add in,
I just spoke with AA,
they just weighed the Rods at 1.05 LBS
and 1.15 LBS with bolts on the scale.
I do not know the weight of the original 40HP rods. anyone?
_________________
ABYC marine master technician , EX European auto technician, new business- EASTCOASTWEST , custom work on campers, only systems, no mechanical |
|
| Back to top |
|
|
|
