windsor timing chains
#1
Member
CRAFTSMAN
Thread Starter
Join Date: Apr 2006
Posts: 62
windsor timing chains
Hi, can anyone tell me the difference between pre efi and efi chain sets. i'm fitting one now and the chain seems very close to the block, i think i've been supplied the wrong set. it's a carbed engine so that's what my supplier gave me.
#2
Senior Member
RACING JUNKIE
Join Date: May 2006
Posts: 2,044
The only difference I know of is the eccentric drive on the front for the fuel pump is omitted in the efi set, both are double rollers, the chain and gears should be the same. Do you have the thrust plate on correctly? Make sure the gear is facing the right way too.
Goodluck, Charles
Goodluck, Charles
#4
Senior Member
RACING JUNKIE
Join Date: May 2006
Posts: 2,044
Originally Posted by qiksix
yes the gears and plate is on right with the oil feed slot over the oil feed hole. was wondering if the gears had a different step machined on them for efi blocks or if block castings are different.
I'll keep digging around and see what I can come up with, Charles
#5
The chain sets are the same. With some of the double roller sets you will have to grind a little off of the thrust plate. You will also need to watch the length of the cam dowell pin. Depending on whether or not you use the fuel pump eccentric and which eccentric you use and the combination of the gear and cam you may have to modify or use a different length dowell pin. Make sure the pin isn't too long and not allowing the cam gear bolt to properly tighten the cam gear. Don't worry about the chain being close to the block, it will run a lot closer than the stock chain because it's wider. There is very little end play on the Ford cams and it won't get any closer than what you have when you build it.