| Section |
Topic |
Details |
 |
 |
Replies |
Last |
|
Detroit:71 Series -
|
Throttle Delay |
VIEW/REPLY |
|
|
3
|
Fri Nov 20 09 6:39 PM |
Yesterday
04:35 PM |
 |
Tomcat
I have JT 671TIB engines with hydraulic throttle delays that were not working. I got the Detroit gages and set them to the specs in my manual. They worked great almost no smoke on acceleration. A pro..... |
|
3 Responses....
|
|
Yesterday
05:44 PM |
#1 |
 |
Ski in NC
The delay should have no effect on no load rpm. At no load the rack is probably only around 10-15% travel so the delay would have to be really buggered up to affect no load. What else was changed in..... |
|
Yesterday
07:04 PM |
#2 |
 |
Mds
Try backing out the buffer screw and see what happens! |
|
Today
06:39 PM |
#3 |
|
Tomcat
the shutdown levers were not full open ,getting 2600 no load now. Rack and delay seem ok.
buffers are backed out until the idle is not affected. If I go in any more the idle raises with a hot engine..... |
|
|
|
Detroit:71 Series -
|
Height of 8v71n head |
VIEW/REPLY |
|
|
1
|
Thu Nov 19 09 1:19 PM |
Yesterday
01:26 AM |
|
Pakie
I have to machine the head on my 8v71n. What is the height of the head? |
|
|
1 Response....
|
|
Yesterday
01:19 PM |
#1 |
|
Steve
New head thickness 3.5560" - 3.5680"
Minimun thickness 3.5360"
Max allowable warp - .004" |
|
|
|
Detroit:71 Series -
|
671TI´s engine buzzer doesn´t buzzzzzzzz |
VIEW/REPLY |
|
|
2
|
Wed Nov 18 09 9:02 PM |
Sep 22 2009
03:48 PM |
|
Mickey
41´ 1985 viking SF, 671TI´s Std. engine buzzer won´t energize with the flip of the toggle switch. All gauges and tach work while engine is running. Seems there is no power at the low oil pressure se..... |
|
|
|
Nov 18 2009
09:02 PM |
#2 |
|
Mickey
I think it worthy of writing this follow up response. We determined that the cause, or should I say electrical failure was responsible for the engine buzzer on the starboard engine not to work.
Many ..... |
|
|
|
Detroit:71 Series -
|
8v71N smoking excessively with ticking noise |
VIEW/REPLY |
|
|
3
|
Mon Nov 16 09 9:30 PM |
Nov 14 2009
11:31 PM |
|
Pakie
I have a pair of 8v71N in a Bertram 46´ which I have been refurshing for the last 6 months in the water. The starboard engine has always smoked a bit more that the port engine. Had the engines tuned a..... |
|
|
3 Responses....
|
|
Nov 15 2009
04:33 AM |
#1 |
|
Ski in NC
A tick noise out the exhaust is often a leaking valve. A compression test will identify the hole. Also do a liner inspection through the airbox to check for broken or stuck rings. If you have sprin..... |
|
Nov 15 2009
11:45 AM |
#2 |
|
Pakie
The number 2 and 4 cylinders compression is low about 360. The noise has gotten louder even though I have not really used the boat but just start it once a week. When I increase the rpm the noise stop..... |
|
Nov 16 2009
09:30 PM |
#3 |
|
Pakie
I had the mechanic pull the head on the right side of the engine. The pistons, valves and rings look good. The head seem to be not sitting on the block good causing all the compression to leak from be..... |
|
|
|
Detroit:71 Series -
|
Convert Allison transmission to Twin Disc on 6-71 inline |
VIEW/REPLY |
|
|
0
|
Mon Nov 16 09 5:24 AM |
Nov 16 2009
05:24 AM |
|
Canvasman
What is required to convert the allison transmission to twin disc on a detroit 6-71 inline laydown style motor. I have mg5065a twin disc sae2 bellhousng transmission |
|
|
NO Responses....
|
|
|
|
Detroit:71 Series -
|
rebuilt 6-71N required |
VIEW/REPLY |
|
|
0
|
Sat Nov 14 09 12:08 AM |
Nov 14 2009
12:08 AM |
|
Robert Hersch
Does anyone know where I can buy a rebuilt 6-71N for use in California?
bob |
|
|
NO Responses....
|
|
|
|
Detroit:71 Series -
|
6-71 Ti Antifreeze |
VIEW/REPLY |
|
|
6
|
Thu Nov 12 09 5:54 PM |
Oct 11 2009
02:15 AM |
 |
Euro1
what antifreeze should i use?Could i use prestone safe in anything?I had a 7.3l international that had to use additive or cyls would erode ,does a detroit have that problem too. |
|
|
|
|
|
Detroit:71 Series -
|
warm oil cannister - 6-71N ? |
VIEW/REPLY |
|
|
0
|
Wed Nov 11 09 11:11 PM |
Nov 11 2009
11:11 PM |
|
Calypso
This might be a foolish question. After warming up at idle and running anti freeze thru raw water intakes on both 6-71N engines, I noticed that the port engine cannister was noticeably warmer than th..... |
|
|
NO Responses....
|
|
|
|
Detroit:71 Series -
|
Dd 671 Tb |
VIEW/REPLY |
|
|
7
|
Mon Nov 9 09 4:45 PM |
Nov 2 2009
01:56 PM |
|
Mike
I am currently looking at a 1989 45´ Viking powered with DD 6v71 TIB rated at 485hp. I am new to the diesel world as this will be my first boat w/ diesels and I trying to do some research on these pa..... |
|
|
|
|
|
Detroit:71 Series -
|
12V71T Overhaul cost - Bertram 54 |
VIEW/REPLY |
|
|
19
|
Mon Nov 9 09 2:35 AM |
Nov 4 2009
01:55 AM |
|
Mike Sobota
I´m casually looking at a 1984 Bertram 54. The survey report (which I have not seen yet but is on the way) indicates that one of the 12V71T engines (listed as 800 hp on the spec sheet) needs to be &q..... |
|
|
|
|
|
Detroit:71 Series -
|
Detroit 3-71 |
VIEW/REPLY |
|
|
1
|
Thu Nov 5 09 2:47 AM |
Nov 4 2009
09:29 PM |
|
Sungrande
Any one can tell me where I can find the specs for this engine?
Thank you. |
|
|
|
|
|
Detroit:71 Series -
|
Idle Adjustment |
VIEW/REPLY |
|
|
0
|
Wed Nov 4 09 2:12 PM |
Nov 4 2009
02:12 PM |
|
Rick Keppelman
I have a pair of old (40+ years) Detroit 671s. What is the correct idle speed and how do I adjust? Thanks, Rick |
|
|
NO Responses....
|
|
|
|
Detroit:71 Series -
|
Specs on 8v71N |
VIEW/REPLY |
|
|
2
|
Mon Nov 2 09 10:43 PM |
Oct 24 2009
08:40 PM |
|
Cobra
Does anyone have a spec sheet on a Detroit 8v71N? I need to know especially the weight, Hp, fuel burn per hr, and dimensions, etc. |
|
|
|
|
|
Detroit:71 Series -
|
Intercooler vs. aftercooler |
VIEW/REPLY |
|
|
4
|
Mon Nov 2 09 10:13 PM |
Sep 6 2009
01:47 PM |
|
Pete
I am interested in understanding the difference between an inter-cooled 6-71 and an after-cooled engine after reviewing the equipment on a boat that had 6-71ta engines. Is there any benefit in mainten..... |
|
|
|
|
|
Detroit:71 Series -
|
6v71ta 360 Hp |
VIEW/REPLY |
|
|
3
|
Sat Oct 31 09 8:06 PM |
Oct 31 2009
02:21 PM |
|
Dieselmule
I´m boat shopping and new to the diesel world Currently considering a 47 Atlantic 47 with de-tuned Detroit 6V71TA´s rated at 360 HP with 1800 hours & no Walker Air SEP´s installed. My question is ho..... |
|
|
|
|
View ALL
