[DeTomaso] Epoxy in Injector Pockets????

[j g]

i personaly like welding , however in all my perhiperal port rotary engines as well as in the bridge port 6 port motors the ports are either completely filled with JB weld and then shaped or are filled and left alone , this is done on the cast iron end housings as well as the area on the aluminum housings that I insert a threaded tube for the intake perhiperal port.
The epoxy (JB weld) holds up just fine , just make sure that the tubes are roughened up with  sand paper  on the outside and the manifold and injector tubes are super super clean and oil free. ( I  etch the tubes and manifold  holes with hydrochloric acid , soap and water wash then acetone wash everything )  use aluminum duct tape inside the manifold runner to hold everything in place while it cures , make sure to do all of this in a warm dry room . wait at least 24 hours before you move anything after the epoxy is applied. Strip off the  tape then use a porting tool to clean up and blend the injector tube into the runner and clean up the epoxy over flow inside. you may also want to build up a fillet of epoxy around the tubes on the outside of the manifold runner to ensure that a good seal and a mechanical stress spreader is made by the fillet.
 
jg 

--- On Tue, 1/19/10, Ken Green <kenn_green at yahoo.com> wrote:


From: Ken Green <kenn_green at yahoo.com>
Subject: [DeTomaso] Epoxy in Injector Pockets????
To: detomaso at realbig.com
Date: Tuesday, January 19, 2010, 5:31 PM


I'm having a manifold converted to EFI and the shop thinks it's better to epoxy the injector pockets into the manifold than to weld them.  I bought MSD pockets, and they say "epoxy in" on the label.  It's a little scary, but there in no structural issue, and it's not like adding epoxy inside ports that can break loose.  Is it a waste of $s to have the pockets welded in?
 
Ken
_______________________________________________

Detomaso Forum Managed by POCA

Archive Search Engine Now Available at http://www.realbig.com/detomaso/

DeTomaso mailing list
DeTomaso at list.realbig.com
http://list.realbig.com/mailman/listinfo/detomaso