"best" 2F

[Mace]

Camshaft, port/polish, balanced crank, higher compression? I will be gaining more torque right where I need it the most, 1500 to 2500rpms, and the larger displacement will help overall hp.

Turbo a 3FE? I wouldn't turbo anything that had the intake and exhaust on the same side, already enough heat there, why add more?

turbo 2F's run quite cool actually.

 

[Pin_Head]

Camshaft, port/polish, balanced crank, higher compression? I will be gaining more torque right where I need it the most, 1500 to 2500rpms, and the larger displacement will help overall hp.

I don't think that this is going to get you as much of an increase as you think. The largest oversize pistons will get you an extra 4 cubic inches; about a 2% increase.

If you want to get 80% more power, you have to burn 80% more fuel. Realistically, the only way to do this is by turbo or supercharging it.

 

[andrewfarmer]

How far over can I go and it still be worth it?

Largest oversize avail is 1.5mm - and boring any larger to accept a 'something else' would IMHO make the liners too thin.

If you really want to get clever, you can also get the big end journals ground down to the minimum size with maximum offset to increase the stroke a bit. But a lot of work for a small gain.

You get decent compression by putting an F head on a 2F block, then lots of shaving!

 

[stumpy]

anytime you free up horsepower by making things run smoother, you will get more horses at the wheels.

if your goal is to drive it fast, go with a 350. just hope you have additional cash for all the adapters and the like. i havent met anyone who has converted to cheb and got off cheaper than i did rebuilding a 2F. always open to discovery though!

 

[andrewfarmer]

I'm currently having a 2F+3FE motor built. Balanced, cam, bored throttle body, head work, 9:1 compression, usual stuff. I'm not expecting anything near 200hp because it's still a long-stroke 2F block. HP is a function of RPM and torque, and this motor will never see over 5k RPM. OTOH, I do expect it to be a torque monster.

Be brave!!

if it's well balanced (and you improve the oiling) 7500rpm is quite achievable

all conrods still attached at both ends

 

[lowtideride]

Be brave!!

if it's well balanced (and you improve the oiling) 7500rpm is quite achievable

all conrods still attached at both ends

I think your in the wrong gear at 7500 rpms...





and if you are in 4th or 5th gear at 7500 rpms id be scared to death....

 

[pappy]

Be brave!!

if it's well balanced (and you improve the oiling) 7500rpm is quite achievable

all conrods still attached at both ends

My tach only goes to 5000rpm, and the last I heard it was impossible to exceed the tach. At least that's what I've been told. Can't remember by who, but I know they were credible.

Besides, I don't take my 22re up that high ... well, at least not often.

 

[alkaline747trio]

turbo 2F's run quite cool actually.

I wasn't referring to operating temp, I was referring to intake temp. But I guess with a turbo, even if you have to retard the timing some, you'd still be making more power.

To run a supercharger would be pretty damn involved. There is plenty of room for a centrifugal, but the drive system would be really hard to figure out. There is not a lot of room in front of the engine, and there are accesories all around the front of the motor. You might be able to remove the smog pump and put one there, but it would be tough.

Be realistic about what you want, youre gonna lay out a bunch of cash to build a super 2f, and when youre still slower than almost everyone else i bet its gonna hurt a little bit.

I never said a S/C would be easy, but it would put the power where you'd want it with the F engines. Where the smog pump goes is sorta where I was thinking, but the intake tube routing would be interesting, then again, so would a turbo's.

What I want is more power, stay Toyota, and not spend more than a grand in the build minus the motor and 3FE stuff. My goal is 200+ hp, that is 45+ more than the 3FE has from the factory. 30% more horsepower is a challenge, but adding the 2F block already gives me about 10% more displacement.

anytime you free up horsepower by making things run smoother, you will get more horses at the wheels.

if your goal is to drive it fast, go with a 350. just hope you have additional cash for all the adapters and the like. i havent met anyone who has converted to cheb and got off cheaper than i did rebuilding a 2F. always open to discovery though!

Nope, don't have the dough for a 350 + adapter, or even to but an adapter to drop my 351 Windsor in here (damn that would be sweet). I really want to stay Toyota, and the lack of options for this motor should keep me in line budget wise, but I may come to realize that 200+rwhp is a naturally aspirated dream.




If everyone here thinks that I wont get close to 200, what do you think I will achieve? What would be a reasonable goal for a 2.5FE?

 

[alkaline747trio]

What hp number would be a good goal for a Frankeinstein 2FE?

 

[treerootCO]

...I never said a S/C would be easy, but it would put the power where you'd want it with the F engines. Where the smog pump goes is sorta where I was thinking, but the intake tube routing would be interesting, then again, so would a turbo's....

Did you miss the pic on the previous page?

 

[Degnol]

Did you miss the pic on the previous page?

Which pic? I wanna talk about superchargers


If it was a good idea before, was it proved wrong? Shorten engine life? Is my thinking all wrong?(prolly) Paxton was THE name in supercharging. Wha' happened?


Lotsa threads on turbocharging......none on supercharging?????? Me asks why?



ED

 

[alkaline747trio]

I'm with Deg, someone make a supercharger for the F series engines.

 

[treerootCO]

...

 

[alkaline747trio]

That is still in production...

 

[treerootCO]

buy one, build a bracket....

 

[andrewfarmer]

What hp number would be a good goal for a Frankeinstein 2FE?

try for 225 - should be achievable on race gas/high compression. You might want to budget down the line for a programmable ECU with knock sensor - then you might get near 250

 

[SHREG]

Great to see this devotion to the venerable F.......

HALE the F! No matter the configuration.....

 

[alkaline747trio]

try for 225 - should be achievable on race gas/high compression. You might want to budget down the line for a programmable ECU with knock sensor - then you might get near 250

Is this 225 with general engine work; RV cam, shaved head, 1.5mm over bore, polish job, blanaced crank? Or is 225 with more than that? I guess then I should shoot for 200 on pump, no racegas avaliable around here, and at $5+ a gallon, to heck with that.

 

[PabloCruise]

buy one, build a bracket....

Where is that pic from???

 

[alkaline747trio]

I'm wondering the same thing, easier said then done to find a universal supercharger.