3100 Chevy Wrist Pin Piston Press - Homemade Press

[Axelsmancave]

Hi All,

I thought I would share my very cool home made piston press that works great. It is made using a Harbor Freight 12 ton bottle jack, a piece of C-Channel, a large steel base plate, and 3/4" - 6 acme rod.



Here is the you tube video of it working as well.

http://www.youtube.com/watch?v=Ocsnup4ayT4

Let me know if you have any questions.

[pocket-rocket]

Well, they say necessity is the mother of all invention, and I think you proved it with that. That's pretty slick man! Nice work

[Axelsmancave]

Thanks, this will come in handy over the next few months. I have simple set of free PDF plans for this on my blog site. I share my ideas whenever I have the time to publish stuff.

[bob442]

i wont give it credit for being a wrist pin press, but a really simply made, easly adjustable press itself.

[Axelsmancave]

Yes I agree. I couldn't find a lot of info on what people used to press their pins out. I found some people using hydraulic presses and one unsuccessful arbor press with someone pulling on the handle, heating the rod with a torch and one other person hitting the top of the ram with a hammer. They broke the arbor press plate.

I can definitely use some better tooling if I was going to do a lot of pin pressing. Thanks for the plus one.

[pocket-rocket]

Yeah, I used the 12 ton (I think) I got from Harbor Freight for doing my front suspension bushings on my Ranger when I had to rebuild a 2.2 out of a 2k Sonoma. It worked great. I just had to use an interesting setup of 2x4s along with the press plates and I never had to heat the rods. My plates are still intact too

[Axelsmancave]

When I make some better looking tooling I'll show some pictures of it here.

[3400-95-Modified]

I'm not a pro here, but I thought the original press tool used to do this supports the rod and does not apply any force to the piston to prevent warping it or leaving marks on the inside where the rod would press... since really the part the pin is pressed into is the rod and not the piston.

Just my .02

I just looked it up

ENGINES WITH PRESSED WRIST PINS J- 24086-C is used to remove and install wrist pins in most (pressed) piston assemblies. This kit contains an assortment of tools in a plastic case for storage. With various adapters, the tool supports the rod and piston to allow the wrist pin press load to be absorbed by the rod, not the piston. Without this support method the piston and rod could be damaged during pin removal or installation. The tool is used with a shop press. Pins must be installed to a specific depth for centering in the rod/piston assembly. NOTICE: Late model and future General Motors engines will feature "floating" piston pins versus pressed pins. This tool is not required for floating pin assembly / disassembly

Might want to try and re-design it off this illustration in the 60degree Articles section

http://60degreev6.com/Articles/Pushrod/3x00_Maint/TSB/TSB01-3x00.html

[Axelsmancave]

Thanks for the info. I was searching for pictures on the web for info like this but didn't find it.

It makes sense to me that the rod would be supported to eliminate damage to the piston.

[bob442]

Theres a Doggy behind the doggy door

.

[Axelsmancave]

Someone has to guard my tools and S10 blazer parts.