|
12-07-2007, 06:21 AM
|
#1
|
Member
Join Date: Nov 2007
Posts: 73
|
jake brake
does anyone know if the 87' 8v92 has the high/low installed and just need the wires connected?? 8% grades every trip!! we have low--(on-off) thanks for any info.....
__________________
__________________
87 Newell Tag 40'-8v92TA-HT740 #139
|
|
|
12-07-2007, 06:52 AM
|
#2
|
Senior Member
Join Date: Feb 2006
Location: Texas
Posts: 1,558
|
Are you sure you just have the low connected? On the '90's Newell's with DDEC-2 8V92's with a single-stage Jake brake it activated all 8 cylinders. Jake's don't provide the retarding power on a two-stroke as they do on a four-stroke. Mine got better after the Detroit Diesel mechanic found a broken wire under the valve cover that was preventing the Jake on two cylinders from activating so I was only getting benefit of the Jake on six cylinders instead of eight.
Jakes work better at high rpm's so keep the engine speed up in the 1800-2100 range to maximize the affect of the Jake. Detroit Diesel did make 8V92's with 2 speed Jake's but I don't know if Newell ever used them.
In 1989, Jacob's released a Jake Brake Tune-Up Kit part Number 017057 that would retrofit the design used previously.
Performance data with the 017057 Jake on an 8V92 was:
1100 RPM 110 Retarding HP
1300 RPM 135 Retarding HP
1500 RPM 170 Retarding HP
1700 RPM 185 Retarding HP
1900 RPM 230 Retarding HP
2100 RPM 260 Retarding HP
__________________
|
|
|
12-11-2007, 10:21 PM
|
#3
|
Senior Member
Join Date: Apr 2007
Location: Minnesota
Posts: 326
|
Jake brake
I have a 1988 with an 8v92 and my jake works on all 8 cylinders and really does a job, especially in the mountains
|
|
|
01-07-2008, 01:57 AM
|
#4
|
Member
Join Date: Nov 2007
Posts: 73
|
Thanks mike for the info. I was thinking that because there was only one wire, the purple one going to the back. that the factory for safety reasons did not include high. hence just on/off.
Brian
__________________
87 Newell Tag 40'-8v92TA-HT740 #139
|
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Threads |
|
|
All times are GMT. The time now is 01:55 AM.