batthewmrown
SILVER Star
Ok, so driving an unknown engine around every day will wear on your nerves. "What's that smoke out of the tailpipe? What's THAT noise?? What if my vacuum and compression numbers should be higher? Is there a time bomb under the hood? Does everyone else's 2F run like this? Maybe 60s normally drive way better." Most days I quiet those voices when I'm driving, but sometimes I can't and that's no fun. So I've decided to replace the head on my 2F. Here goes nothing.
Compression test below, yes it looks like rings would be a good idea, but no I can't pull the block out of a daily driver to have it serviced. Sorry
View attachment 2887947
Seeing as my compression numbers are between 125-143 and have gone down a little over the past year (129-145), and since I have a puff of white smoke from the tailpipe every time after idling - even for two seconds at a stop sign - AND because my exhaust smells distinctly like what you'd expect burning coolant to smell like ... I think I have a head gasket leak. Who am I kidding, mostly I'm paranoid. Blackstone found zero trace of coolant in my oil. I also think I'd see some better drivability and POWER from a fresh and clean head. Yes, huge POWER numbers coming soon haha. At the end of the day, I don't think a refreshed head can hurt anything.
Check the insides of my cylinders - lovely, huh?
View attachment 2887940
As always, because I daily drive this thing I have to streamline the work. That meant I found a spare head. It's already at the machine shop. The goal, in my world, is always to swap s***. I have a spare manifold set that I will build and have machined, too. Swap everything. I've never gone this far on an engine before so I ought to be able to pull it off in a weekend, right?
Here's the head I picked up. Looks clean, hopefully no cracks
View attachment 2887938
I'm getting kind of nutty about the whole project though. I'm considering ordering ALL new OEM hardware - every stud, nut, bolt, washer for the head and manifolds. That alone will cost as much as the bill from the machine shop, and hey ... what was I saying about the blue-collar budget again? Some of it will get pared away as I get closer to swap weekend.
Page one (of two) of a potential shopping list:
View attachment 2887942
Here's where I need feedback:
1. New head bolts or no? OEM runs $120.
2. New pushrods? Why not swap em while I'm in there? $210 for OEM. Yikes.
3. What exhaust valves should I get? OEM will run $155. The machine shop - who has lots of 2F experience - typically uses SP or SB or something, no clue on cost.
4. I'll be replacing the thermostat and associated gaskets and the fan clutch (I happen to have a new Aisin one on hand already) while I'm in there. What else?
5. This f**king EGR J-pipe ... what's the true solution here? I've done the manifold gasket twice on this thing and the J tube leaks on both sides every time. I can watch puffs of smoke come out of the j-pipe to EGR cooler junction in time with the cylinders firing. Since I'm pulling the manifolds I may as well attempt something different here. I HAVE to be smogged where I live.
6. How far should I deck the head? 0.030 to 0.060 are the suggestions I'm reading about. I'm ok running 89 gas but don't really want to move to 91 unless it's gonna be life changing. No I'm not getting a new cam, not for the foreseable future any way.
7. Should I DIY port the intake or exhaust manifold? Should I DIY a gasket match job? I'm not paying the machine shop to do that.
Notes: Jim C rebuilt carb, brand new carb insulator plate
Obviously, spend the money. The radiant heat from your credit card will keep you warm this winter when you can't afford the Xcel bill!
Also, check out partsouq. Shipping is murder but sometimes you can save some $$$.