| Section |
Topic |
Details |
 |
 |
Replies |
Last |
|
Detroit:8.2 Series -
|
8.2 Cooling Hoses Update |
VIEW/REPLY |
|
|
10
|
Fri Nov 20 09 8:28 PM |
Nov 6 2009
01:36 AM |
 |
Randall Mccoy
thanks for trying to help . I cant find any help from Detroit. my 8.2 250 hp has detroit cast iron exhaust manifolds.Do I need to drill and tap 1/4 inch pipe threads in the top rear of the manifolds a..... |
|
|
|
Nov 19 2009
05:06 PM |
#7 |
|
Paul P
No Problem Randall. Hope the project goes smoothly. Post some pics with the final product. It´s always great for us to share the resolution of our fixes from which everyone can learn.
Bill, I ..... |
|
Nov 19 2009
09:16 PM |
#8 |
|
Bill
Paul,
Not sure which Zerex product you´re refering to. I went tot he web site and found their extended life coolant, which carries a DDA acknowledgement in the product PDF. But what that citation r..... |
|
Yesterday
06:08 PM |
#9 |
|
Paul P
Bill
Thanks for the info. Good info on the website link you provided. Sounds like the correct coolant for our application. My mechanic has been right on the money so far!
I´ll only be using the..... |
|
Yesterday
08:28 PM |
#10 |
|
Bill
Paul,
When you tested the various heat exchangers, did you simply take them off and let the shop do it, or did you [self] use a pressure pump w/gauge? If you did it yourself, what mfgr gauge did yo..... |
|
|
|
Detroit:71 Series -
|
Throttle Delay |
VIEW/REPLY |
|
|
3
|
Fri Nov 20 09 6:39 PM |
Nov 19 2009
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....
|
|
Nov 19 2009
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..... |
|
Nov 19 2009
07:04 PM |
#2 |
 |
Mds
Try backing out the buffer screw and see what happens! |
|
Yesterday
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 |
Nov 19 2009
01:26 AM |
|
Pakie
I have to machine the head on my 8v71n. What is the height of the head? |
|
|
1 Response....
|
|
Nov 19 2009
01:19 PM |
#1 |
|
Steve
New head thickness 3.5560" - 3.5680"
Minimun thickness 3.5360"
Max allowable warp - .004" |
|
|
|
Detroit:53 Series -
|
Raw Oil In Exhaust |
VIEW/REPLY |
|
|
5
|
Wed Nov 18 09 11:09 PM |
Nov 17 2009
04:27 AM |
|
Edzinda
i´m thinkin this can´t be good.. friend has 6v-53N with dry exhaust.. 80´s vintage.. seems to run fine, but all the sudden started blowing oil out the pipe.. used about a quart on one 8 hr trip (used ..... |
|
|
5 Responses....
|
|
Nov 17 2009
05:16 AM |
#1 |
|
Ski in NC
A quart in 8 hours is not horrible. But if it has changed, then something is up. What rpm is he running? A wet stack can occur with a healthy engine if run at low load.
Is rpm different from bef..... |
|
Nov 17 2009
07:11 AM |
#2 |
|
Edzinda
Thanks for your reply.. Something up for sure, cause it went from dry stack to wet with oil stack just like that, and now he tells me oil is seeping at all the exhaust joints that aren´t 100 percent t..... |
|
Nov 17 2009
12:16 PM |
#3 |
|
Ski in NC
Any additional oil draining from airbox drain tubes? If blower seals are leaking, a good portion of that oil will end up draining out of the airbox, but some will be blown out the stack. It will lik..... |
|
Nov 18 2009
04:33 AM |
#4 |
|
Mds
Agree with Ski. Pull the exhaust manifolds back and try to isolate it to one bank or even one cylinder. If all show oil then a common problem exists. Fuel dilution, Clogged air box drains, Blower seal..... |
|
Nov 18 2009
11:09 PM |
#5 |
|
Edzinda
thanks guys.. i will report what we find.. Ed |
|
|
|
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:8.2 Series -
|
Small amount of oil in coolent expansion tank. |
VIEW/REPLY |
|
|
13
|
Wed Nov 18 09 2:00 PM |
Feb 6 2009
04:38 PM |
|
Jrms80
Looking in the expansion tank of a 1989, 8.2 turbo with about 2600 hrs on it I noticed a little oil floating on the surface of the coolant. The motor runs great and does not over heat. Any ideas on ..... |
|
|
|
Nov 15 2009
12:11 AM |
#5 |
|
Jrms80
Had the oil cooler replaced and the problem seemed to get worse. Had heads pulled, serviced and reinstalled by local 8.2 experts. No change, oil still getting into the coolent. I´m wondering now if t..... |
|
Nov 16 2009
07:51 AM |
#6 |
|
Bill
The turbo is another place where oil and coolant cross paths. I´ve never disassembled one, so my comment is only speculative.
Doubt it´s a cracked block. Even a one time oil analysis would answer t..... |
|
Nov 17 2009
02:00 PM |
#7 |
|
Jrms80
Couple of questions I have and really don´t have a good answer for.
We have not pressure tested the coolent system because we all believed that there is in fact a breach or esle how could the oil g..... |
|
Nov 17 2009
10:18 PM |
#8 |
|
Mds
When the heads were pulled did you have them checked. When looking for a problem like this it is important that every step is taken to prove a part prior to reassemble. Did a shop or your mechanic cle..... |
|
Nov 18 2009
12:11 AM |
#9 |
|
Jrms80
I was told they where checked when the heads were sent out to the machine shop. The problem is now I am suspect of everything.
We are now negotiating having the oil cooler removed and replaced ag..... |
|
Nov 18 2009
12:24 AM |
#10 |
|
Edgar Ramos
Make sure its oil and not just soot with some degree of internal engine rust. I once suspect of oil and it was just soot with rust. I just flush, add new coolant and rust inibator. So, make sure its a..... |
|
Nov 18 2009
12:27 AM |
#11 |
|
Jrms80
unfortuately it is oil. Much more is comming in now that before we started the repair, it´s obvious. |
|
Nov 18 2009
03:45 AM |
#12 |
|
Mds
My thoughts at this point. If you are questioning the work that has been done then have it rechecked in your presence. If the coolers test ok then pay for the testing or work it out with your mechanic..... |
|
Nov 18 2009
02:00 PM |
#13 |
|
Jrms80
What you are saying makes sense.
As you might imagine there will be much resistance to the idea from the local repair shop. I´ll see if we can come up with some sort of agreement on how to move f..... |
|
|
|
Detroit:92 Series -
|
VDO Temperature Gauges |
VIEW/REPLY |
|
|
4
|
Wed Nov 18 09 9:42 AM |
Oct 24 2009
01:20 PM |
|
Marinos
The VDO electronic temperature gauge that is situated in the flying bridge gives an unreliable reading, (ex. VDO reading: 210F when the mechanical temp. gauge that is in the engine room reads 176F). D..... |
|
|
|
Nov 18 2009
09:42 AM |
#4 |
|
Marinos
I am coming back with this issue because I still have not managed to solve the high water temperature alarm problem. I have been advised that the mechanical temperature gauge is about 100% reliable an..... |
|
|
|
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:92 Series -
|
6V92 TA Twin turbo 550hp injector heights? |
VIEW/REPLY |
|
|
7
|
Fri Nov 13 09 3:08 AM |
Oct 14 2009
06:32 PM |
|
Jorge
I have 2 6V92 TA with twin turbo 550 hp. We have been getting conflicting information while trying to find the correct injector height setting for this engine with the 9225 and 9215 H injector. The ..... |
|
|
|
|
|
Detroit:8.2 Series -
|
8.2 Detroit Torque Specs Turbo |
VIEW/REPLY |
|
|
1
|
Thu Nov 12 09 8:31 PM |
Nov 12 2009
03:58 PM |
|
Randall Mccoy
Does anyone know the torque spec for turbo to crossover nuts and crossover to exhaust manifold bolts? Thanks |
|
|
|
|
|
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:92 Series -
|
Water Pump Leak |
VIEW/REPLY |
|
|
0
|
Thu Nov 12 09 1:09 AM |
Nov 12 2009
01:09 AM |
|
Schizoman
I have a 6V92TA. When I had an engine survey done about a year ago. I was told that the water pump was leaking coolant. Ive keep an eye on it and had to add coolant occasionally. I´m finding the coola..... |
|
|
NO Responses....
|
|
|
|
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....
|
|
|
View ALL
