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Top 2GNT Technical Performance/Engine topic #103014
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Subject: "Crankshaft Drag spec?" Previous topic | Next topic
foggy45Feb-08-07 08:21 AM
Member since Dec 28th 2003
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#103014, "Crankshaft Drag spec?"




          

im finally to the point where all my parts are here and i can actually rebuild the engine.

since this is my first ever rebuild i have questions emoji
through talking to howell and my machinist, i know the main bearings i got are correct. and the crank is ground and straight.

after following corbins rebuild post to the letter, i go and try to spin the crank and it is really tight. (well to me atleast)

i cannot find the spec in my manual for the crankshaft drag.
i figure its not suposed to be able to freespin but i though it should be able to move by hand.
it is a smooth rotation with no bindings

from my masurements it takes me 16 ftlbs to get it spinning and then 10 to keep it going.

(yes the pistons arent attached)

thnks in advance

______________________________________
______________________________________
"Don't fear the weapon, fear the soul of the warrior using it."
"My CEL only goes off when i remove my battery."

Best sum up of working on a 2GNT
DR1665- "#5. Spike that motherfucker on the garage floor and grab a beer. You deserve it."


Ahhhh Priceless . . .
eclipse982nrRST "its actually lightish red"
RoninEclipse2G "yeah, they already have a color for that... it's called PINK"

  

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Global Ruler Of All ThingsDarkOneFeb-08-07 08:25 AM
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#103015, "RE: Crankshaft Drag spec?"
In response to Reply # 0




          

Have you plastigauged your bearing clearances and checked them against the factory spec?

high crank drag is a sign of tight clearances.

______________________________
If a sentence found online has 35% misspellings or greater and includes at least two racially charged expletives, chances are it is a YouTube comment.

'95 Eclipse TurboGS (garage deco)
'95 TSi AWD (restoring a survivor)
'97 Talon ESi-T (poor impulse control)
'99 Eclipse RS-T (daily beater)
'13 Evo X (mostly stock)
'17 Sienna (Middle Aged Dad Mobile)



Factory Service Manuals: http://nawdu.de/files/

  

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foggy45Feb-08-07 08:36 AM
Member since Dec 28th 2003
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#103017, "RE: Crankshaft Drag spec?"
In response to Reply # 0
Feb-08-07 08:37 AM by foggy45



          

yep
0.0015 (+- 0.0002) in 2 places each bearing

______________________________________
______________________________________
"Don't fear the weapon, fear the soul of the warrior using it."
"My CEL only goes off when i remove my battery."

Best sum up of working on a 2GNT
DR1665- "#5. Spike that motherfucker on the garage floor and grab a beer. You deserve it."


Ahhhh Priceless . . .
eclipse982nrRST "its actually lightish red"
RoninEclipse2G "yeah, they already have a color for that... it's called PINK"

  

Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

    
Slo2gFeb-08-07 08:42 AM
Member since Feb 10th 2006
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#103018, "RE: Crankshaft Drag spec?"
In response to Reply # 2


          

When I did mine it was about 8-9 ftlbs of rotational force.

  

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Global Ruler Of All ThingsDarkOneFeb-08-07 09:28 AM
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#103019, "RE: Crankshaft Drag spec?"
In response to Reply # 3




          

Sounds about right. I couldn't spin them by the crank snout, but if i pushed on a counterweight it would move freely.

What about your thrust clearances?

______________________________
If a sentence found online has 35% misspellings or greater and includes at least two racially charged expletives, chances are it is a YouTube comment.

'95 Eclipse TurboGS (garage deco)
'95 TSi AWD (restoring a survivor)
'97 Talon ESi-T (poor impulse control)
'99 Eclipse RS-T (daily beater)
'13 Evo X (mostly stock)
'17 Sienna (Middle Aged Dad Mobile)



Factory Service Manuals: http://nawdu.de/files/

  

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foggy45Feb-09-07 02:59 AM
Member since Dec 28th 2003
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#103039, "RE: Crankshaft Drag spec?"
In response to Reply # 4




          

cant remember the clearences off hand but there were within spec.

the crank has loosened up a bit and now take about 6ftlbs to keep spinning.
we think that the assembly lube was just tight at first and once we moved it around a bit it got better

thanks to everybody who replied

______________________________________
______________________________________
"Don't fear the weapon, fear the soul of the warrior using it."
"My CEL only goes off when i remove my battery."

Best sum up of working on a 2GNT
DR1665- "#5. Spike that motherfucker on the garage floor and grab a beer. You deserve it."


Ahhhh Priceless . . .
eclipse982nrRST "its actually lightish red"
RoninEclipse2G "yeah, they already have a color for that... it's called PINK"

  

Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

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