Anyone know what a complete 8v92 Jake Brake system should cost?
There are a few on Ebay now coming from military engines and i was tempted....
Im assuming I can transplant six of the eight units into my 6v92?
If I can rebuild a diesel can I install Jakes or is there some magical 10k$ tool required?
I had two sets of the military 8V92TA Jake brakes. One came with the newer Jake fuel lines requiring O rings. Both had fast idle on the governor hi/lo rpm speed adjustor. New style buffer screw Jake switch. They will work on the 6V92 with Jake valve covers. Make sure you get the covers with the breathers and oil fill angled for your engine.
--Geoff
So I should be looking for "New style buffer" ?
I have a pair of valve cover spacers that came off of a 6v71 -will those work?
New style buffers take away some frustration but you loose the fast idle,then buy you a Jake feeler gauge beats trying to stack 2 feeler gauges, the spacers will work ok but do seep oil.Do your home work on adjusting the buffer or it will get away from you in hurry,and do not forget to adjust the bridges they are going to off taking those from another engine
Quote from: luvrbus on July 23, 2017, 09:16:33 AM
New style buffers take away some frustration but you loose the fast idle,then buy you a Jake feeler gauge beats trying to stack 2 feeler gauges, the spacers will work ok but do seep oil.Do your home work on adjusting the buffer or it will get away from you in hurry,and do not forget to adjust the bridges they are going to off taking those from another engine
Loose fast idle?
ok so im looking for new style buffers.
Hoping to set it up as 24v and in two stages.
If they are from a military engine it will be diffidently 24v,2 stage Jakes are a waste of good wire unless you just want 2 stage brakes ;D
is there a way to easily visually identify if they are new style buffers?
The new style are solid state, type in parts number 01-022351 and you should find it that is the latest switch from Jake
Quote from: luvrbus on July 23, 2017, 03:18:05 PM
The new style are solid state, type in parts number 01-022351 and you should find it that is the latest switch from Jake
Thank you!
I put 2-stage Jakes (just three wires to the dash) and after 7k miles on it I like the low/hi Jake switch. When going down the Tehachipi mountain from AZ to CA the low switch is perfect for keeping the bus coasting at a speed where I and my wife were happy. Turning the Jakes to hi would slow us down where I would have to give it throttle or slow to a stop. Low may not stop you but it is good for coasting down the long grades.
-- Geoff
What is a reasonable price to pay for the parts? 500?
If they need rebuilding what is involved?
There is a set on Ebay for $350.00,any set you buy from Ebay plan on rebuilding it is not hard all it is springs, oil control valve and o-rings.You can buy the kit from any PacBrake vendor for $125.00 compered to a DD kit for $250.00.You will need fuel lines PC Industries has the best price on those that I found about $8.00 each x 12
Quote from: luvrbus on July 23, 2017, 06:26:06 PM
There is a set on Ebay for $350.00,any set you buy from Ebay plan on rebuilding it is not hard all it is springs, oil control valve and o-rings.You can buy the kit from any PacBrake vendor for $125.00 compered to a DD kit for $250.00.You will need fuel lines PC Industries has the best price on those that I found about $8.00 each x 12
any thoughts on these > http://www.ebay.com/itm/Detroit-Diesel-8v92-Complete-24-volt-Jake-Brake-System-ORIGINAL-/122481168546 (http://www.ebay.com/itm/Detroit-Diesel-8v92-Complete-24-volt-Jake-Brake-System-ORIGINAL-/122481168546)
Quote from: Darkspeed on July 23, 2017, 06:39:24 PM
any thoughts on these > http://www.ebay.com/itm/Detroit-Diesel-8v92-Complete-24-volt-Jake-Brake-System-ORIGINAL-/122481168546 (http://www.ebay.com/itm/Detroit-Diesel-8v92-Complete-24-volt-Jake-Brake-System-ORIGINAL-/122481168546)
I doubt the seller knows what a "complete" Jake components set is. I sold a set on this board for $500. Everything-- valve covers, fast idle, hi/lo switch with authentic toggle switch and name plate, new buffer,-- I mean everything you could think of. Unless the seller gives you a breakdown of all the parts I would pass. Go to the parts for sale on this Board and search Jake brakes and you will find my ad listed with every part.
--Geoff
Anyone know if part # PN 8925269 is a tall valve cover to fit a 6v92?
There seems to be a lot of different placements of oil breathers , fill caps , or non of the above in these valve covers.
My short valve covers do not have fill caps or breathers.
What is preferable?
If you have a turbo engine you are supposed to have breathers on the valve covers. Do you have steel or aluminum covers now? Do you have barely enough valve cover clearance now? Need to know...
--Geoff
Quote from: Geoff on July 25, 2017, 10:38:02 AM
If you have a turbo engine you are supposed to have breathers on the valve covers. Do you have steel or aluminum covers now? Do you have barely enough valve cover clearance now? Need to know...
--Geoff
Yes it is a turbo 6v92 silver but no breathers - but it was a an engine from a Navy training stand for rebuilding allison automatics.
Meaning I dont think it was ever on the road.
Should I add tall covers with breathers?
I have plenty of room to add tall valve covers.
8925269 valves covers are for the 6v53 engines they won't work,you need valve covers with the vent on the side of valve covers for a V drive engine the covers with the breather vents in the top are for the T drive engine that set up right
The Turbo engines always have breathers because of the extra crankcase pressure. It helps the engine seals from leaking. I put Jakes covers on my 6V92TA and I had to get the breathers on the RB to clear the exhaust on the inside, and LB to stay out of the way of the engine compartment door. And of course the oil fill needed to be on the LB.
What is the serial number of your engine (out of curiosity)
--Geoff
Thanks!
Any idea where I can get the correct tall covers with breathers?
I have a set of 8V92 Jakes that came off a government vehicle... I don't know much about them but they look to be in good condition.
Long story short, we are selling our bus and would sell the set to you if you want them. I can take pictures of them for you. We paid $416.50 shipped. It would be nice to get our money back on them.
They were sold under the title: Detroit Diesel 8v92 Series Jake Brake (ONLY) complete system 24 volts
The original ad is no longer up on eBay. I am not sure if these are the exact ones you are looking for. Like I said, happy to take pictures and shoot them to you if you are interested.
This is the eBay store we bought them from (another ad for Jacobs Brakes they are selling, exactly what we bought from them):
http://www.ebay.com/itm/Detroit-Diesel-8v92-Complete-24-volt-Jake-Brake-System-ORIGINAL-/122481168546?hash=item1c847250a2:g:voEAAOSwzaJYAPk6 (http://www.ebay.com/itm/Detroit-Diesel-8v92-Complete-24-volt-Jake-Brake-System-ORIGINAL-/122481168546?hash=item1c847250a2:g:voEAAOSwzaJYAPk6)
If you want them we can give you a better deal so at least we get some money back and you save more money. $325 shipped?
So I bought Bjorn's Jake Brake parts and it did have the mechanical buffer switch.
Should I get a solid state buffer switch?
All of the 6v92t flixable engine packages I have seen have solid valve covers with no vents - as mine does
Do I need to convert to vented valve covers??
Any idea where to source two tall valve covers?
Thanks!
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