2F - rebuild...

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Hello,

I hope you all had a wonderful Christmas…🎅

As mentioned before, I'd like to send my camshaft to Deltacam in Tacoma.

What would you recommend?

Should I send my camshaft to Deltacam or buy the RV kit from Man-a-Fre instead?

Best regards, Jürgen
I used Delta Camshaft for a 2F engine rebuild I did last July. They also resurfaced my lifters. They prefer talking on the phone over email, which may be difficult for you with the time difference between Washington, USA and Deutschland. Anyway, I asked for the "light RV grind for low end torque" and what I received was more aggressive than I wanted. There is a definite power boost around 1800-2500rpm, which to me is the middle of the band. Maybe because most engines rev higher Delta considers 1800-2500 to be the "lower" part of the band. There are past threads that indicate that I received the "859-KC" cam. Those old threads show that Delta also has a grind called "250S" which may be more mild and not so aggressive. My truck likes to idle much better around 900rpm rather than 650-750rpm, and the vacuum is lower due to increased valve opening overlap.

None of the above is to speak badly about Delta. Their work was very good and their communication was very clear. Very high quality stuff. They used a brand new 3F cam core because my old cam was heavily pitted. It's good to know they have stock of those NOS cams.
 
Could someone please tell me what kind of thread I need to cut?

So I can get the right tap...
So, I did a little research.

And I think I've found the right tap...✌️😎

Screenshot_20251229_223554_com.android.chrome_edit_513649053016414.webp
 
 
I used Delta Camshaft for a 2F engine rebuild I did last July. They also resurfaced my lifters. They prefer talking on the phone over email, which may be difficult for you with the time difference between Washington, USA and Deutschland. Anyway, I asked for the "light RV grind for low end torque" and what I received was more aggressive than I wanted. There is a definite power boost around 1800-2500rpm, which to me is the middle of the band. Maybe because most engines rev higher Delta considers 1800-2500 to be the "lower" part of the band. There are past threads that indicate that I received the "859-KC" cam. Those old threads show that Delta also has a grind called "250S" which may be more mild and not so aggressive. My truck likes to idle much better around 900rpm rather than 650-750rpm, and the vacuum is lower due to increased valve opening overlap.

None of the above is to speak badly about Delta. Their work was very good and their communication was very clear. Very high quality stuff. They used a brand new 3F cam core because my old cam was heavily pitted. It's good to know they have stock of those NOS cams.
Hi,

That sounds really good, what you wrote. 👍

I've already packed my camshaft very securely for the big trip. 😁
I'll send it to Deltacam next week.

I emailed the guys at Deltacam a few minutes ago; I'm curious to see what they reply. 🤔 Shipping from Germany isn't too expensive.

I already checked with the post office; shipping to Tacoma costs 80 euros.

I think that's still okay...

Jürgen 😎✌️
 
We knew it did. That hole is left over from the factory drilling the oil passage to the rocker stand, every 2F has one.
Also, look into "Port-Matching" between your head and the intake manifold and your new header to smooth out the transitions between them. Also, maybe smooth the walls of the head ports and the intake manifold. And get some better plugs for those air injection ports...

View attachment 4053952
Does it make a big difference to adapt the channels to the gasket and, of course, to the intake manifold?
 
I have Delta reground cams in all 3 of my 2F's. They have all been rebuilt along the lines of the Hi-PO Mosely 2F.

The 60 has the KC 859 grind. It produces power at above 2000 RPM, which works well with the 5 speed and the use of the truck as a true "overland" build where more time is spent on forest roads and pavement exploring and traveling the west than on any hard core offroading.

The 40 has the 250s grind which produces power below the 2000 rpm of the KC 859 . I really like it a lot as it seems to match the 2F motor better, and the 40 's use is almost all off highway and running around doing errands

I like the 250s enough to have a 250s regrind waiting to be installed in the 45's 2F when the parts are back from the machine shop.
Hope this helps with your decision.
 
I have Delta reground cams in all 3 of my 2F's. They have all been rebuilt along the lines of the Hi-PO Mosely 2F.

The 60 has the KC 859 grind. It produces power at above 2000 RPM, which works well with the 5 speed and the use of the truck as a true "overland" build where more time is spent on forest roads and pavement exploring and traveling the west than on any hard core offroading.

The 40 has the 250s grind which produces power below the 2000 rpm of the KC 859 . I really like it a lot as it seems to match the 2F motor better, and the 40 's use is almost all off highway and running around doing errands

I like the 250s enough to have a 250s regrind waiting to be installed in the 45's 2F when the parts are back from the machine shop.
Hope this helps with your decision.
Man, this makes me bummed that I didn't get the 250S grind. I wanted more grunt down low. The KC grind's additional power up around 2000 rpm and above is nice though.
 
Does it make a big difference to adapt the channels to the gasket and, of course, to the intake manifold?
The slight mismatch in your photos will not affect flow in a meaningful way. If you are inexperienced in the art of intake and exhaust porting,
I'd suggest leaving it alone. A quality exhaust header will give you a noticeable power and MPG increase so I would get that if you haven't yet.
Aftermarket carbs can improve performance as can the popular Sniper FI mods.
When I rebuilt my 2F, the port mismatch was minimal like yours. We did match the ports but my builder was a pro and did a very nice job.
 
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I have Delta reground cams in all 3 of my 2F's. They have all been rebuilt along the lines of the Hi-PO Mosely 2F.

The 60 has the KC 859 grind. It produces power at above 2000 RPM, which works well with the 5 speed and the use of the truck as a true "overland" build where more time is spent on forest roads and pavement exploring and traveling the west than on any hard core offroading.

The 40 has the 250s grind which produces power below the 2000 rpm of the KC 859 . I really like it a lot as it seems to match the 2F motor better, and the 40 's use is almost all off highway and running around doing errands

I like the 250s enough to have a 250s regrind waiting to be installed in the 45's 2F when the parts are back from the machine shop.
Hope this helps with your decision.
Hi,

First of all, thank you so much for your detailed reply. 👍

So, my engine is going into my FJ45 pickup, which I'm currently restoring.

It won't be doing much off-roading; I'm thinking 80 percent on-road and 20 percent off-road.

It'll be my summer, sun, good vibes Cruiser. 😎

So, more on-road than off-road.

What would be bad if the KC859 were to steal torque from the from the 2F in the lower Rev range.

Jürgen 😎✌️
 
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What would be bad if the KC859 were to steal torque from the from the 2F in the lower Rev range.
A 2F has a very long stroke, you'll have plenty of low-end torque any way you build it. Also, what tranny and diff gears will you be using?
 
Hi,

First of all, thank you so much for your detailed reply. 👍

So, my engine is going into my FJ45 pickup, which I'm currently restoring.

It won't be doing much off-roading; I'm thinking 80 percent on-road and 20 percent off-road.

It'll be my summer, sun, good vibes Cruiser. 😎

So, more on-road than off-road.

What would be bad if the KC859 were to steal torque from the from the 2F in the lower Rev range.

Jürgen 😎✌️
To me it doesn't feel like there is any less torque in the lower rpm range with the KC859 cam. It simply feels like there's more torque from approximately 1800-2500rpm.
 
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