13bt into 76 FJ40 challenges

siurana · 02-22-07, 10:26 PM

I am currently put a 13bt and h55 into my 76 FJ40.

To start with I have two questions.

In making the engine and transmission mounts with a buddy. We haven't been able to get the output flange directly inline with the differential flanges. So I'm no expert about driveshafts but I assume you need to get it as close to in-line with the diff flanges as possible.

We've moved the tranny/engine combination as far forward as I would like. The driveshafts have Ujoints on both ends, so I assume they are designed for both vertical and horizontal alignment differences. But how much and at what pitch should the drive shaft sit at? Any advice would be great. I know the pitch will also change once all the engine/tranny weight is on the frame.

Next problem, does anyone have any advice on hooking up an air filter for one of these. The 13bt is an 85, red block. I have an air filter setup from an 87 mini truck. But I see it has some kind of valve system with wiring on it before the air goes into the filter. Does anyone have any advice on the best setup for my situation? I will try to give G and S a call tomorrow.
Thanks
I posted this message in the FJ40 section as well.

rutbeer · 02-23-07, 05:17 PM

Driveshafts need to be more in plane rather than in line. In other words, they can be offset to the side and up and down, but they need to be at the same angle from the ground and perpendicular to the frame. Don't worry so much about the front one as the rear. You can always put a CV joint on the front shaft to make up for a bad angle.

siurana · 02-23-07, 08:36 PM

That make sense, I appreciate the advice. Any thought on the best set-up for an air intake.

rutbeer · 02-23-07, 08:50 PM

Get a B series air cleaner or get a 70 series air cleaner that mounts on the passenger side. I suppose you could modify an early F air cleaner, but the B series will probably be the easiest. I have to look and see what I actually have....I haven't looked that close at it, but I think mine's a 70 series.

02-22-07, 10:26 PM	#1
siurana IH8MUD Rookie Join Date: Jan 2007 Location: Chilliwack, Canada Posts: 36	13bt into 76 FJ40 challenges I am currently put a 13bt and h55 into my 76 FJ40. To start with I have two questions. In making the engine and transmission mounts with a buddy. We haven't been able to get the output flange directly inline with the differential flanges. So I'm no expert about driveshafts but I assume you need to get it as close to in-line with the diff flanges as possible. We've moved the tranny/engine combination as far forward as I would like. The driveshafts have Ujoints on both ends, so I assume they are designed for both vertical and horizontal alignment differences. But how much and at what pitch should the drive shaft sit at? Any advice would be great. I know the pitch will also change once all the engine/tranny weight is on the frame. Next problem, does anyone have any advice on hooking up an air filter for one of these. The 13bt is an 85, red block. I have an air filter setup from an 87 mini truck. But I see it has some kind of valve system with wiring on it before the air goes into the filter. Does anyone have any advice on the best setup for my situation? I will try to give G and S a call tomorrow. Thanks I posted this message in the FJ40 section as well.

02-23-07, 05:17 PM	#2
rutbeer IH8MUD Lifer Join Date: Jun 2004 Location: North Carolina Posts: 1,146	Driveshafts need to be more in plane rather than in line. In other words, they can be offset to the side and up and down, but they need to be at the same angle from the ground and perpendicular to the frame. Don't worry so much about the front one as the rear. You can always put a CV joint on the front shaft to make up for a bad angle. __________________ 78FJ40 w/13BT diesel (BIESEL),66FJ45(MARMUT), 13BT install thread www.importpurist.com "Much like a cat or hot buttered toast, the correct side will always try to land down. If the bezel is on upside down, then the force of it trying to right itself may cause you to roll your cruiser unexpectedly."

02-23-07, 08:50 PM	#4
rutbeer IH8MUD Lifer Join Date: Jun 2004 Location: North Carolina Posts: 1,146	Get a B series air cleaner or get a 70 series air cleaner that mounts on the passenger side. I suppose you could modify an early F air cleaner, but the B series will probably be the easiest. I have to look and see what I actually have....I haven't looked that close at it, but I think mine's a 70 series. __________________ 78FJ40 w/13BT diesel (BIESEL),66FJ45(MARMUT), 13BT install thread www.importpurist.com "Much like a cat or hot buttered toast, the correct side will always try to land down. If the bezel is on upside down, then the force of it trying to right itself may cause you to roll your cruiser unexpectedly."

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02-23-07, 08:36 PM	#3
siurana IH8MUD Rookie Join Date: Jan 2007 Location: Chilliwack, Canada Posts: 36	That make sense, I appreciate the advice. Any thought on the best set-up for an air intake.