BRODIX 5" BORE SPACE BLOCK QUESTIONS
Moderator: Team
BRODIX 5" BORE SPACE BLOCK QUESTIONS
I am possibly going to purchase a 5 inch bore space aluminum block and I have a few questions on which type of cam bearings .I was planning on a 60mm cam bearing babbit instead of a roller type bearing and was hoping some one here could show some pics as to how the center 3 cam bearings are retained in the block with the babbit type bearings. Or is a 55mm roller cam bearing a better way to go? Engine will be either a 738 or a 762 cu in. And my other question is the HIP process a good option to go with , I assume the block is stronger having this done? I would appreciate if a pic could be posted.I enjoy this forum very much. THANKS gary m
- mt-engines
- Expert
- Posts: 880
- Joined: Fri Sep 27, 2019 12:35 pm
- Location: MN
Re: BRODIX 5" BORE SPACE BLOCK QUESTIONS
They use spirolocs in the front and rear if i remember correctly and a 1/4" allen heads to lock in the middle. Id use the babbit.
- midnightbluS10
- Expert
- Posts: 933
- Joined: Sun Oct 20, 2013 8:41 am
- Location: Shreveport, LA
Re: BRODIX 5" BORE SPACE BLOCK QUESTIONS
Personally, I'd go for the HIP process. The block is subjected to elevated temps around 900* and pressures of around 15000 psi using an inert gas, usually argon.
For example, for A356, it changes these specific properties of the aluminumHot Isostatic Pressing (HIP) for densification of metal castings occurs by the uniform application of gas pressure at an elevated temperature upon a material in all directions. Internal microporosity is reduced or eliminated, greatly increasing the cast products mechanical properties, as well as improving the quality of its machined surface.
The HIP Process:
Decreases or eliminates microporosity.
Improves product consistency with less variation in mechanical properties.
Enhances impact strength, toughness, and machined surface finish.
Removes shrinkage defects, creep voids, and internal cracks.
Code: Select all
Ultimate tensile strength (ksi) Yield strength (ksi) Elongation (%) Stress (ksi) Life (cycle)
A356 Al alloy as-cast plus heat treatment
37.5 30.6 1.9 20 2 X 10^5
A356 Al alloy -- Densal II + T6
39.9 31.2 4 20 6 X 10^5
JC -
bigjoe1 wrote:By the way, I had a long talk with Harold(Brookshire) last year at the PRI show. We met at the airport and he told me everything he knew about everything.It was a nice visit. JOE SHERMAN RACING
Re: BRODIX 5" BORE SPACE BLOCK QUESTIONS
Thanks for the replys.So how does the 3 button head screws retain the center 3 cam bearings?? Are the screws to keep the cam bearing from spinning or to keep the cam bearing from moving back and forth?? I guess that no one here has any pics but thanks anyway. gary m
- mt-engines
- Expert
- Posts: 880
- Joined: Fri Sep 27, 2019 12:35 pm
- Location: MN
Re: BRODIX 5" BORE SPACE BLOCK QUESTIONS
They keep them from moving back and forward, you can use green loctite like some guys do. But the bearings to use are fully grooved on the backside. So even if they slip a bit, you still get oil. If i get one in soon i can send you some pics.garym wrote: ↑Fri Nov 01, 2019 5:44 pm Thanks for the replys.So how does the 3 button head screws retain the center 3 cam bearings?? Are the screws to keep the cam bearing from spinning or to keep the cam bearing from moving back and forth?? I guess that no one here has any pics but thanks anyway. gary m
-
- Expert
- Posts: 994
- Joined: Sun Mar 21, 2010 9:48 pm
- Location: Somewhere, Alaska
- Contact:
Re: BRODIX 5" BORE SPACE BLOCK QUESTIONS
I run the 4.84" inch block, but have roller bearings. They are retained by spiral locks. Was gonna do babbit bearings but block came setup for the roller so just stuck with it....
Mark Goulette
Owner/Driver of the Livin' The Dream rear engine dragster
Speed kills but it's better than going slow!
http://www.livinthedreamracing.com
Authorized Amsoil Retailer
Owner/Driver of the Livin' The Dream rear engine dragster
Speed kills but it's better than going slow!
http://www.livinthedreamracing.com
Authorized Amsoil Retailer