Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Silver84k5, Jun 16, 2002.
think it would kinda sound tight, is it possible? or would it be harful or what? anyone know? thx
if its diesel
not possible to do it on a gas motor?
Doesn't a Jake brake require a special head/valve train on a diesel that pops the valves open at full compression? (so most of the energy isn't returned upon expansion).
Perhaps you're thinking of a exhaust brake. Never heard of one of those installed on gasoline engine tho.
basically the answer is no hehe, damn that sucks it would be cool as hell
what are jake brakes, i saw a sign on the highway that said "no jake brakes" or something similar, and never even heard of it. thx
"Jacob's Engine Brakes" are a compression brake designed by Jacob for large diesel engines. The smallest engine I know of them fitting is a 11 liter detroit. It has turned into a generic term for that type of engine brake. It works on the same principle as a compression brake on a two stroke motor in a dirt bike.
They are making engine brakes for smaller diesels now. You can get a setup for about $400 for your Ford/Dodge/Chevy deisel powerd ride. Something that just came out this year. As far as gas is concerned fat chance.
I've seen the ads for those ones that put a flapper valve in the exhaust. Those are just an update on the "blue ox" engine brakes, and they didn't work that well. The "jake" in my pete has 600 hp of braking torque at 2100 rpm. No valve that shuts off part or all the exhaust pipe is going to have that much braking power. /forums/images/icons/wink.gif
600hp uh-oh another crazy ass truck driver. Cluck cluck.
That's braking hp from the jakes. I've only got a 425 hp cat though it does have 1450 ft lbs of torgue from the same motor. that's from a 14 liter 3406B Kitty Cat motor. /forums/images/icons/cool.gif
Ahhh I remember the mechanical days.... 2 bad everything is computerized these days. I.ve got 2 of the 3406c's 475 turned up to 550. I wanted the 600's but at the time I would of had to wait 6 months. So I got what I got and must say I like em, 2 bad I'm stuck in the 1st trk century class 500 det. /forums/images/icons/frown.gif
Yep with a 2100 rpm motor, 2100 in 7th is 38 mph. The perfect gear and speed for a 7% grade. Don't have touch the brakes much if at all. Save the brake for when some cage jumps in front of me. /forums/images/icons/laugh.gif
For the lay man, a "jake brake" on a gas motor would pretty much blow the head off the block, a gas motor is not design for that much compression. A diesel motor, because it uses only compression to ignite the air/ fuel charge, is designed for much higher compression ratios. If you want to go diesel, the best "old" style chevy diesel motor was the 1983 J series detroit diesel. Watch out for the old 350 conversions, they were junk as diesel motors, but great to convert back to gas.
There was a guy running around here about 15 years ago had a mid 70s 1 ton 2wd long bed that had stuffed a 3208 cat in it with an allison trans too. That baby could pull a trailer. /forums/images/icons/cool.gif
How? Isn't that one of those 6' long inlines that are about 4' tall?
No the 3208 was used in medium duty trucks. Bigger than a BBC but could be "stuffed" in the engine compartment.
3208's were really common in the old medium duty COE Fords - didn't take up much additional room over the standard 332's either.
Yeah I have this idea of a 1 ton frame and cab. 3208, allison 6 speed, 2.5 ton TC, and axles with rear steer too. Mech injected would run under water as long as the intake and exhaust were plumbed high. /forums/images/icons/laugh.gif
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Yeah I have this idea of a 1 ton frame and cab. 3208, allison 6 speed, 2.5 ton TC, and axles with rear steer too. Mech injected would run under water as long as the intake and exhaust were plumbed high.
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Please post the pictures when you get it done! /forums/images/icons/wink.gif
Can I take it for a swim?
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