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Author Topic: brown tag N65 timing??  (Read 1032 times)
thomasinnv
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« on: July 01, 2011, 08:55:07 PM »

I have a non turbo 8v71 w/ brown tag N65. da book shows 1.484 for advanced timing and 1.460 for standard timing. Clifford (luvrbus), you said you thought it was most likely standard timed when i was at your place. Is that a most likely guess? or what should I be looking for? I know you have to pull the bell housing to know for sure. Anything on the build tag that might give an indication? I would like to get the correct timing gauge so I have one in the tool box.
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There are three kinds of people in this world....those that make things happen, those that watch things happen, and those that just wonder what the heck is happening. Which one are you?

1977 MCI Crusader MC-8
8V71N/740
95% converted (they're never really done, are they?)
luvrbus
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« Reply #1 on: July 01, 2011, 09:16:32 PM »

I thought you had 60's either gauge will work I think Don uses a 1.470 for 65's I use the 1.460,1.464 or 1.466 for about everything.If you want a 1.484 I have some extras I will send you one do you have Jakes 

good luck
« Last Edit: July 01, 2011, 09:23:35 PM by luvrbus » Logged

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thomasinnv
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« Reply #2 on: July 01, 2011, 09:24:03 PM »

they are definitely brown N65's. so you think 1.460 would be a safe choice? where is good place to get it?
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There are three kinds of people in this world....those that make things happen, those that watch things happen, and those that just wonder what the heck is happening. Which one are you?

1977 MCI Crusader MC-8
8V71N/740
95% converted (they're never really done, are they?)
luvrbus
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« Reply #3 on: July 01, 2011, 09:31:28 PM »

Send me a address and I'll send you a 1.484 ok
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« Reply #4 on: July 01, 2011, 09:40:58 PM »

  Are the injectors different for the different clearances???
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thomasinnv
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« Reply #5 on: July 01, 2011, 09:57:37 PM »

pm sent. Thanks Clifford!

btw, I will be r&r the blower to get to some pretty bad leaks later this summer. I assume i will have to re-adjust the left and right rack connecting rods, but everything else should be fine?
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There are three kinds of people in this world....those that make things happen, those that watch things happen, and those that just wonder what the heck is happening. Which one are you?

1977 MCI Crusader MC-8
8V71N/740
95% converted (they're never really done, are they?)
bevans6
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« Reply #6 on: July 02, 2011, 12:45:49 PM »

If all you do is change the injector height setting you shouldn't need to change the rack finger settings.  On my 8V71N it had the brown tag n65's and was timed at 1.460, and it had advanced timing so I guess I could have changed it to some advantage but never did that.  Anyway, you can check the timing pretty easily without taking anything big off, by using a dial gauge.  Procedure is in the manual, and the difference between normal and advanced is pretty big on the dial gauge.  (Pretty easy compared to taking the back of the engine off, you still need a tool chest and a couple of hours...)

My pet peeve about these engines is that no one has yet been willing to tell me what the different injector height settings do other than set the timing of the injector.  Is 1.460" setting advanced or retarded compared to 1.484"  What is the difference in performance?  Smoke? Economy?  Are you on the heel of the cam lobe when you set it, or are you somewhere on the opening or the closing ramp of the cam lobe?  Inquiring minds really want to know!

Brian
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1980 MCI MC-5C, 8V-71T from a M-110 self propelled howitzer
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1978 Lola T440 Formula Ford
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luvrbus
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« Reply #7 on: July 02, 2011, 12:58:02 PM »

Get you the supplemental on injectors tells all you guys buy the 2 part manuals and that covers just about the basics.
I saw the 12 volume set for the 71 series sell for 1500 bucks not long ago on Ebay wasn't a bad price since you can no longer get it from DD

good luck
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bevans6
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« Reply #8 on: July 02, 2011, 02:49:55 PM »

See what I mean?  They know but they won't tell   Cool  Secret oriental masters of unknown mysteries...   Grin

Brian
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1980 MCI MC-5C, 8V-71T from a M-110 self propelled howitzer
Spicer 8844 4 speed Zen meditation device
Vintage race cars -
1978 Lola T440 Formula Ford
1972 NTM MK-4 B/SR
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