Wile E Coyote
Out in the streets, they call it murder!
Nice ressurection there, Matt. 
Pert near 3 year old thread.
Pert near 3 year old thread.
3FE engine beef up (1 Viewer)
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matt.mcinnes
2F-ETI
Got to love search for reading up but have to admit I did not look at the last post date
but have to admit I did not look at the last post dateHas Anyone tried the Jet ECU upgrade? What About removing the clutch fan and using 1 big or 2 small electric fans? Frees up HP on anything else
'85 timing adjust FJ60
can somone tell me how to adjust the timing on a 1985 FJ60?
can somone tell me how to adjust the timing on a 1985 FJ60?
Yeah, I am right there...38mph up to the tunnel last week in my 60... sooo slow.
Holy thread revival batman
Thanks to all of you 3fe power adder pioneers. I'm ab to crack mine & do a similar build:
Forged internals
RV grind cam / lifters
Headers
Hi flow cats
Full exhaust
Bored TB
Injectors
Jet CPU tune
Hot tank / steam clean intake manifold
De smog
Hopefully the beast will roar
Forged internals
RV grind cam / lifters
Headers
Hi flow cats
Full exhaust
Bored TB
Injectors
Jet CPU tune
Hot tank / steam clean intake manifold
De smog
Hopefully the beast will roar
rrv333
SILVER Star
A friend of mine has some sort of a cold air intake on his 3FE.
I test drove it and it feels like it has some good torque, off the line, power.
Acceleration is not super, but just the start from stopped kick feels a little more.
Would a cold start intake make any kind of a difference here?
I tested the engine when it was cold, so the air temp would have no significance in my short test ride, but the filter looked like a cone type. The only difference possible by this intake system is less restrictive air flow.
Does less restrictive air intake flow affect off the line torque? My guess would be no. I would think that would only help with horsepower at higher revs where air flow comes into play.
Anything I said make sense?
I test drove it and it feels like it has some good torque, off the line, power.
Acceleration is not super, but just the start from stopped kick feels a little more.
Would a cold start intake make any kind of a difference here?
I tested the engine when it was cold, so the air temp would have no significance in my short test ride, but the filter looked like a cone type. The only difference possible by this intake system is less restrictive air flow.
Does less restrictive air intake flow affect off the line torque? My guess would be no. I would think that would only help with horsepower at higher revs where air flow comes into play.
Anything I said make sense?
Anyone had their TB bored by RC lately? Curious if just a TB bore would produce a difference in power on an otherwise stock engine. Help or hurt MPGs? And yes I know, cruisers and MPG's don't play well together.
Virtually no difference at all. Just look inside the air meter, it's a much smaller opening than the throttle body. The factory (quite large) air filter will not really be a restriction.
I think simply swapping out the AFM with a MAF sensor would make a large difference in high RPM power. One mudder a while back was working on a conversion and almost had it dialed in with the help of the MAF manufacturer, but lost his 62 in a fire. He was definitely on to something though. If I had the funds available I'd try to pick up where he left off, but sadly, I don't.
There are many older vehicles with similar sized VAMs making a lot more power than FJ62's. The 3FE is just a choked up tractor engine.
It's really easy to measure pressures in the intake tract. That'll tell you whether it's a restriction.
I agree, the AFM ducting looks wretched. But then you look at the intake valves, and... they're tiny.
So some work's in order.
I'll put it on the list- 1- assemble motor 2- convert truck to 2FE 3- measure intake pressures!
But seriously, helping a friend convert a different AFM to MAF, it's incredible how different the
airflow path is. Restriction? dunno about that...
t
I agree, the AFM ducting looks wretched. But then you look at the intake valves, and... they're tiny.
So some work's in order.
I'll put it on the list- 1- assemble motor 2- convert truck to 2FE 3- measure intake pressures!
But seriously, helping a friend convert a different AFM to MAF, it's incredible how different the
airflow path is. Restriction? dunno about that...
t
Is the head what really limits the power on these things? There are plenty of old I6's that can make some pretty serious power, seems these should be able to as well. I'm guessing the lack of aftermarket parts doesn't help.
It's almost always the heads and cam that are the main limiters of power.
The 3FE also has a few other things working against it, mainly the 4-main bearings, which means a lot of the crank is unsupported. That limits how fast you can spin the engine, which limits your power.
The F-series engines can take a lot of abuse, and run for an extremely long time, but the architecture predates almost every "old I6" by 20 years or more, and just isn't that capable of making big power.
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What package is this you're talking about? I know Delta will do custom grinds on Toyota F engine cams that people have had good reviews of.
What has me curious is if oversized valves would be worth the work required to make them work in an F head. At the very least porting/polishing & port matching the head and having the stock valves 3-angled would help airflow through the head.
If I was to really go for extra power with a 3FE I would first do the old "hot rod" tricks that have been shown to make a difference at lower RPMs (4K and below). As said before, the 4 main bearings prevent safely reaching high RPMs with these engines.
At a pretty low lift, the valve shrouding becomes a limiting factor on the 3FE.
And there's not enough metal to machine it open and use a hemispherical pistion.
Ironically, an old, open- chamber head with a domed piston starts to look pretty good
when you look at trying to get close to the 1FZ power levels...
t
And there's not enough metal to machine it open and use a hemispherical pistion.
Ironically, an old, open- chamber head with a domed piston starts to look pretty good
when you look at trying to get close to the 1FZ power levels...
t
