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dow50r wrote:5500 is 25% more than std. Is the crank 25% stronger?
Make sure this surge tank gets topped up faster than its used....no1 reason for turbo motor failure.....if possible, you should look for an efi pump in tank setup to supply the surge tank. There have been so many ppl with 304 efi in 3f 80 series that have come undone...fix was the 4.5 tank and pump or 3fe which is thesame.
Andrew
I thought crank strength was more important when you took the "bang" (force per square inch when the piston fires) and not the rotational speed (where things like rod length etc is more important?).
there's a dude in nz that has a 7000rpm cutoff on his non-turbo 2F, should be fine from that point of view. i can see the mains walking or the crank snapping where there isn't a bearing supporting the crank (between 1 and 2 or 5 and 6).
2F Toyota mechanical pump moves 2400cc per min
I should be good 5500. Rod bolts and con rods are weak points and are now ARP and Jaguar (con Rods) Crank is also cross drilled for better oiling
I's dotted T's crossed and fingers too off to DYNO at PGS tomorrow should all be completed by Tuesday next week
This is fir the original question. Putting a larger main jet in also helps with power and the dreaded melting valve syndrome... I once owned a 3f80 and i loved it....till i found the 4.5
Confucious say...man who argue with idiot, worserer himself
Insane turbo engineering aside - best bang for buck mod for a 3f is a good set of extractors and decent exhaust system. Straight away you'll notice that it revs much easier & higher. The 3f is no powerhouse but the number of people who are conviced my middie is a deisel is amazing. the 3F produces lots of torque down low. It just idles through most obstacles.
Mick_n_Sal wrote:Insane turbo engineering aside - best bang for buck mod for a 3f is a good set of extractors and decent exhaust system. Straight away you'll notice that it revs much easier & higher. The 3f is no powerhouse but the number of people who are conviced my middie is a deisel is amazing. the 3F produces lots of torque down low. It just idles through most obstacles.
M+S
think the 3f has low down torque? try something with a real long stroke (i.e. 2F).
Mick_n_Sal wrote:Insane turbo engineering aside - best bang for buck mod for a 3f is a good set of extractors and decent exhaust system. Straight away you'll notice that it revs much easier & higher. The 3f is no powerhouse but the number of people who are conviced my middie is a deisel is amazing. the 3F produces lots of torque down low. It just idles through most obstacles.
M+S
think the 3f has low down torque? try something with a real long stroke (i.e. 2F).
Ive owned a 1980 fj60 with 3 speed.....3000 rpm at 110 km/hr, which was a bit fast for the old limo...the 80 had extracters and jet and electronic ignition, so i was stoked with its overall performance compared to the old 60...
Other than these mods, a 60 thou shave of head is worth the effort if gas is going to be ran...that ups comp from 8 to 9/1....
Andrew
Confucious say...man who argue with idiot, worserer himself
matt.mcinnes wrote:
2F Toyota mechanical pump moves 2400cc per min
How much does the efi pump flow per minute, compared to 2400cc's thats going to be supplied if filter is clean?? Is the efi pumps return flow going back to tank or surge tank?? If surge tank, have you considered cooling the fuel on its return from manifold???
Its a hard balancing act, you need to supply a continuous flow to surge tank, more than is used by efi pump, the surge tank nees to be primed before efi starts, so electric is best for supply, you could run electric and 3f std pump side by side...then fuel needs to discipate heat, usually does this by returning to tank and loosing heat into the chassis and air flowing by there...When fuel heats up, it becomes harder to pump, pressure builds up in lines you wouldnt expect it to....yada tada...Im sure you will get it sorted, this is all intended as food for thought.
Andrew
Confucious say...man who argue with idiot, worserer himself
Mick_n_Sal wrote:Insane turbo engineering aside - best bang for buck mod for a 3f is a good set of extractors and decent exhaust system. Straight away you'll notice that it revs much easier & higher. The 3f is no powerhouse but the number of people who are conviced my middie is a deisel is amazing. the 3F produces lots of torque down low. It just idles through most obstacles.
M+S
think the 3f has low down torque? try something with a real long stroke (i.e. 2F).
Or even better a 2FE
nah, EFI does nothing for me. 2F-LPG with the right cam and a bit more compression (they run fark all compression from factory).
dow50r wrote:Ive owned a 1980 fj60 with 3 speed.....3000 rpm at 110 km/hr, which was a bit fast for the old limo...the 80 had extracters and jet and electronic ignition, so i was stoked with its overall performance compared to the old 60...
Other than these mods, a 60 thou shave of head is worth the effort if gas is going to be ran...that ups comp from 8 to 9/1....
Andrew
course. your comparing a 3 speed with a 5 speed... a 2f runs out of puff around 3000... but down low
matt.mcinnes wrote:
2F Toyota mechanical pump moves 2400cc per min
How much does the efi pump flow per minute, compared to 2400cc's thats going to be supplied if filter is clean?? Is the efi pumps return flow going back to tank or surge tank?? If surge tank, have you considered cooling the fuel on its return from manifold???
Its a hard balancing act, you need to supply a continuous flow to surge tank, more than is used by efi pump, the surge tank nees to be primed before efi starts, so electric is best for supply, you could run electric and 3f std pump side by side...then fuel needs to discipate heat, usually does this by returning to tank and loosing heat into the chassis and air flowing by there...When fuel heats up, it becomes harder to pump, pressure builds up in lines you wouldnt expect it to....yada tada...Im sure you will get it sorted, this is all intended as food for thought.
Andrew
2400cc per min is good for around 400hp and I can't see us making that at 2000rpm which is what the pump delivers 2400cc to the surge tank at.
The surge tank has an over flow to the main tank so fuel is constantly circulating and cooling from the main tank. The surge tank feeds the high presure system and back to itself.
If we have a fuel shortage issue it's easy to go all electric. But I can't see it myself.
We only need prime the surge tank and from their on we should be good.
