PabloCruise
SILVER Star
I would assume as well, but I am learning half my skillz from reading your thread!
Help me plan for a 2FE
- Thread starter RockDoc
- Start date
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
I would assume as well, but I am learning half my skillz from reading your thread!
Slipping in the seal with the cap works well.
- Thread starter
- #184
Rod bearings spec out in the 0.045-0.055mm range, within the FSM spec 
Rocker assembly has been put back together, and the block heater checks out good. Next on deck tonight is to use the head gasket as a template and cut out a blasting mask to use in prepping the head for coatings (tomorrow is supposed to be nice weatherwise, so a good day to blast). Still waiting on the cam to show up...
Rocker assembly has been put back together, and the block heater checks out good. Next on deck tonight is to use the head gasket as a template and cut out a blasting mask to use in prepping the head for coatings (tomorrow is supposed to be nice weatherwise, so a good day to blast). Still waiting on the cam to show up...
Sweet! looking forward to seeing pics of that head all coated up!
Lookin good!
bake er' up
bake er' up
The coating is to prevent carbon build up?
How does it improve the suspension of the atomized fuel (optimum burn) with all that smoothness?
Looking Great?
How does it improve the suspension of the atomized fuel (optimum burn) with all that smoothness?
Looking Great?
- Thread starter
- #190
I'm not sure on the carbon build up, I would hope it will help there, but it isn't a totally smooth finish. When it goes on, it has the feel of unglazed pottery, but it does smooth out some with baking. The real benefit comes from reduced transfer of heat to the head and piston top. Less heat for the cooling system to handle (goes out exhaust instead) and since you are keeping the heat in the chamber up, there is more pressure to drive the piston. According to Vizzard's book, coating the piston can give a 4-8% improvement in full throttle efficiency, with similar boosts when you coat the chamber (but slightly lower for an iron head vs. an aluminum head). If they work as he suggests, I figure around 8-10% in this case. Keeping the piston cool should also keep away scuffing like they had when I tore down the engine.
Of course all of this hinges on the coating staying put and not flaking off after the first hour of running the engine. I guess a guy wouldn't know till something happens to make him pull the head off.
Bore Scope it before you start it and then after you break in the cam and then after you run it awhile to see if the coating is still there?
- Thread starter
- #192
Where would I look for a bore scope to use? Do most shops have one?
Even the cheap scopes are $300 ... Locals or local shop may have one. Diesel shop, usually.
PabloCruise
SILVER Star
If you wanted to use an electronic one, new smaller ones with higher resolution and bigger screens are coming out all of the time. Finding a used one should not be that hard.
I was thinking more of one you could use to look in a wall. They do not bend that much but you only have to go in the SP hole and up a little.
I was thinking more of one you could use to look in a wall. They do not bend that much but you only have to go in the SP hole and up a little.
sweeet.. whens it all going together?
- Thread starter
- #198
Timing gear is on the cam, thrust clearance specs out good, just finished cleaning the lifter bores, ready to burnish in some of that powder.... it's going together.
- Thread starter
- #199
Progress pics.... head is on, lifters, pushrods and rocker assembly about to go in. That might be it for a while, headed out of town tomorrow, and I likely won't get it swapped in till after I move in a month (the recent push was as much to get it into a "movable" state as anything).
2FE in dressed down state:
Compare that with a 3FE in about the same state. Look at the difference in length between the top of the timing cover and base of the head:
The valves on the 2FE, with equal length and dressing between intake and exhaust (to run with a 2F rocker assembly).
Same view on the 3FE, exhaust valves are longer, and dressed differently. Rocker assembly differs from 2F to suit.
Showing the extent to which the piston skirts drop out of the bore at BDC on the 2F bottom end.
.... and on the 3FE. You can see that the pistons drop out greater portion of the shorter piston height. Sorry for the crappy pic, it was taken with the camera upside down underneath the block with little space...... best I could get.
2FE in dressed down state:
Compare that with a 3FE in about the same state. Look at the difference in length between the top of the timing cover and base of the head:
The valves on the 2FE, with equal length and dressing between intake and exhaust (to run with a 2F rocker assembly).
Same view on the 3FE, exhaust valves are longer, and dressed differently. Rocker assembly differs from 2F to suit.
Showing the extent to which the piston skirts drop out of the bore at BDC on the 2F bottom end.
.... and on the 3FE. You can see that the pistons drop out greater portion of the shorter piston height. Sorry for the crappy pic, it was taken with the camera upside down underneath the block with little space...... best I could get.
Great pictures. The height difference I measured was 2 1/8". I measured from oil pan mounting surface to head mounting surface of each block.
