240ci Suggestions: 240 Pistons, Thin Metric Rings, and...

[pmuller9]

The 4.9 was MAF only in 1996.
Ford also went to sequential injection that same year.
Before 96 it was speed density and batch injection.

 

[GreasyNRusty]

P-

I might as well admit defeat on the 240/4.9L swap on this one; I can see it turning in to (yet another) huge money black hole.

If I can buy the truck cheep, simply regearing to a 3.07 (from my '91), a cat-back exhaust, and lightening the poor thing as much as possible whilst retaining the OEM 300 seems the only way forward possible. (Sniff-snivel-whine-moan).

Thanks for your help!

eddiE

(PS-You do psycho evaluation in yer "spare" time?)

 

[pmuller9]

(PS-You do psycho evaluation in yer "spare" time?)

I'm in therapy myself after 11,000 posts on this forum.
It's looking like my chances of recovery are slim to none.

 

[pmuller9]

P-

I might as well admit defeat on the 240/4.9L swap on this one; I can see it turning in to (yet another) huge money black hole.

If I can buy the truck cheep, simply regearing to a 3.07 (from my '91), a cat-back exhaust, and lightening the poor thing as much as possible whilst retaining the OEM 300 seems the only way forward possible. (Sniff-snivel-whine-moan).

Thanks for your help!

eddiE

(PS-You do psycho evaluation in yer "spare" time?)

Maybe after you get the truck on the road and find out for sure what emissions testing it needs (If any) we can revisit this again.
I don't believe in defeat.

 

[GreasyNRusty]

Neither do I; but I'm pragmatist enuff to go to Plan B if necessary. You can be rest-assured that the 3.9L (240 EFI) idear is still a-brewin' in the back of what little "mind" I have left.

You've gotten me really curious about the EFI valve/combustion chamber shrouded fast-burn design...I think the EFI head's designer paid close attention to Harry Weslake's patents and English Austin/BMC's usage in their log-running A-Series (and B-series), and if so, David Vizard may have some valuable input.

I opened up FordSix tonight with idea of posting a "Wanted" classified ad; see if I can get a crack-free head off one the members. Give me something to fool with during our cold, cruel, dark "Winter" (it was 80 and sunnytoday)(I went running in shorts; the paparazzi followed; watch the upcoming cover of National Enquirer).

Eddie

 

[Walken100]

2 tidbits. Lots of fraud out there on parts off of forums and market place etc... That said be sure to establish a saved search on market place. I picked up an entire engine for $50 to mock up my engine mounts and I've seen lots of engines and parts for sale for reasonable amounts.

 

[GreasyNRusty]

Oh yeah; I bought an appropriate head offa Ted (Fordman75) awhile back. Long, long ago. Say, 2000-ish...Dinosaurs walked the Earth; Politicians told the truth...NO, NOT THAT FAR BACK! That said, I'd rather help out a member if possible but I reviewed Promaxx's website at No O'clock this morning and:

1. ProMaxx has a fairly decent image of the combustion chamber side of their replacement head; I can guesstimate what I need to do.
2. For the money, they have a fair price, and they make their head out of good cast iron, not that "other" metal;
3. According to what I've read on FordSix, they've fixed the durability problem (and yeah, I've got your posts in my sights...along with the 11,000+ post addict [above}...heh-heh);
4. Assuming I am able to talk the guy out of this truck, I've buy the solid foundation to begin with, i.e., the new head.
5. Thus, I am withdrawing my want ad, BUT NOT BECUZ I'M SKEERED; NO, not me. Not at all. EEK!

Eddie

 

[pmuller9]

Good choice on the Promax replacement head.
It has hard seat inserts for both the intake and exhaust.
Depending on the camshaft valve lift you may want to buy the bare head and install the longer pre-EFI valves. 4.810" versus 4.750"

 

[GreasyNRusty]

Paul, you have only yerself to blame for the P-Maxx head choice (well, you and your fellow enabler [above]): Your earlier suggestion in THIS THREAD last weekend, remember? Sheesh, I'm the ol' fart that is supposed to have CRS.

(Aside) Seen the Hat/Bumper Sticker/T-Shirt? "At my age, getting lucky means I remember why I'm here..."

To my way of thinking, cast iron is the better, stiffer material for a long, long inline engine with a non-skirted block.

Good suggestion on bare head, since whatever I do will get a sharp multiangle valve/seat job, probably on OE diameter nailheads. Diameter OK for a dump truck 300, i.e., adequate for a 240. I'll figure gas flow when I have a chance to do some cipherin'; THERM 101 was a long time and many er, 2 beers ago.

Outstanding questions I have 'bout the P-Maxx replacement head:
1. Valve seat angles. I'm (here it comes, folks) "assuming" P-Maxx is using a single (30 or 45) angle;
2. General as-cast finish on the ports and combustion chamber;
3. I forgot...

I imagine those questions have all been asked and answered with pics, but...CRS. Good all-purpose excuse.

Further backwards FordSix reviewing at Zero-no-hundred Fried Day morning, during which I will ID all the various culprits, heh-heh. And then promptly fergit 'em.

Eddie

 

[Walken100]

Outstanding questions I have 'bout the P-Maxx replacement head:
1. Valve seat angles. I'm (here it comes, folks) "assuming" P-Maxx is using a single (30 or 45) angle;

Single 45

2. General as-cast finish on the ports and combustion chamber;

Much better than the couple of OEM heads I have seen. Not perfect by any means.

3. I forgot...

Wait what was I saying....

I imagine those questions have all been asked and answered with pics, but...CRS. Good all-purpose excuse.

I did an eval. https://fordsix.com/threads/porting-a-promaxx-head.87440/page-2, post 39

I have other pics somewhere but the takeaway is the my Promaxx head had far less casting flash and smother transitions.

 

[GreasyNRusty]

I think (sometimes a dangerous thing and ALWAYS expensive) that I may have read through that WHOLE thread this A.M--As in, "Owww. I can't believe I ate the whole thing!" My brain was full, I tell ya, and for a double whammy, I...went to sleep... Then I got up'n'shaved 'n' saw m'self in the mirror, and A.), said, "Hoo, boy, would ya look at the head on that," and B.), Cackled and said, "ALL RIGHT! I WOKE UP!" (So to speak).

Had nightmares, though--Clouds of heavier-than-air (?) cast iron filings chased me around a world fulla cars with V-6 engines mounted crossthreaded and powering the wheels at the wrong end of the car...and Sydney Sweeny was always outta reach...(sniff)...


I'll make sure to reread #39 (or read it for the 1st time), THANX!

Eddie