The Quick/Small/(Stupid?) Question Thread-take 2

Tech tips and how to's

Moderators: notoptoy, garth, S Allen

greydog
Roadster Fanatic-Site Supporter
Posts: 1644
Joined: Sat Nov 21, 2009 11:37 pm
Location: Vancouver, Washington

Re: The Quick/Small/(Stupid?) Question Thread-take 2

Post by greydog » Tue May 21, 2019 11:55 pm

2mAn wrote:
Thu May 09, 2019 10:32 pm
Subject: Deleting the fan. Other than shorter bolts to replace the space taken up by the spacer and fan itself, is there anything else I need to worry about? Champion Radiator is on the way and I plan to wire up an electric fan.

Seems simple, just want to make sure Im not overlooking anything
Nope. I used hex key button head capscrews to hold the pulley on. Easy to trim off an Allen head key to fit if space is really tkight.. you can start a screw, put the Allen key in a d turn the waterphmp pulley to thread it in.
Dan
.68 SRL311 aka "Skortch". On the road again.
'69 SPL311 aka "Scooter" terrorizing the streets
1990 Nissan 300ZX
2008 VW GTI
2017 VW Passat

C.Costine
Roadster Nut-Site Supporter
Posts: 1082
Joined: Fri Feb 13, 2015 8:08 pm

Re: The Quick/Small/(Stupid?) Question Thread-take 2

Post by C.Costine » Wed May 22, 2019 7:17 am

Have you replaced the tiny white plastic washers inside the windshield washer sprayers? What did you use?
located in Chester NH
1967 1600 in restoration
2013 Arctic Cat F-1100 turbo
Ford F-350 6.0
Ford 9000 puller, Ford 960 puller, Ford 901show, Ford 971 worker, Oliver 70 waiting its turn

User avatar
Gregs672000
Roadster Fanatic-Site Supporter
Posts: 6646
Joined: Fri Aug 07, 2009 11:47 pm
Location: Tacoma, WA

Re: The Quick/Small/(Stupid?) Question Thread-take 2

Post by Gregs672000 » Wed May 22, 2019 11:45 am

Pete, thanks for the detailed response! My current gear is a 19 tooth, and I purchased a 20... way too big in diameter. Given that my speedo jumps at least 10mph on each bump, I'll probably just reinstall the old gear and remember that it reads about 8mph faster than it is per my GPS speedo on my phone. When the officer asks me " Do you know how fast you were going?" I'll be able to truthfully say "Ah, no." My plan will be to have my wife call out GPS speed while I observe what the speedo is saying until my brain has adjusted! I have a 3.9 RX7 LSD and 205/50/15 tires/wheels.
Greg Burrows
'67 2000 #588
Tacoma, WA

User avatar
68DSU
Roadster Fanatic-Site Supporter
Posts: 1002
Joined: Thu Nov 03, 2011 10:02 am
Location: Fair Oaks, Ca.
Model: 1500/1600
Year: High Windshield-68-70

Re: The Quick/Small/(Stupid?) Question Thread-take 2

Post by 68DSU » Sat May 25, 2019 10:22 am

It has been my experience that I only look at speedometers when I think I'm going too fast so, for me, the best strategy is to slow down if I feel the need to check.
Rick
Constantly working on the Datsun whenever I get around to it.

1968 SPL 311
1987 Toyota MR2 T-top (don't hate, wife's car)
2014 Ford Mustang convertible
SPF 50

User avatar
2mAn
Roadsteraholic
Posts: 1698
Joined: Mon Jan 09, 2017 5:02 pm
Location: Inglewood, CA

Re: The Quick/Small/(Stupid?) Question Thread-take 2

Post by 2mAn » Sat May 25, 2019 5:28 pm

Starting the reassembly process on my motor, and was wondering about the two chains.

Does the jackshaft chain need to be in some sort of alignment with the cylinder position?

I believe the jackshaft simply spins the fuel pump, oil pump and turns the distributor so I would think it doesn’t matter, but wanted to ask before I start buttoning it all up
Simon
Current Cars:
-1986 BMW 325e - pursuit of happiness
-1968 Datsun Roadster 2000 - happiness of pursuit

User avatar
Solex68
Site Supporter
Posts: 1440
Joined: Fri May 25, 2012 3:30 pm
Location: Laguna Hills, CA
Model: 2000
Year: High Windshield-68-70

Re: The Quick/Small/(Stupid?) Question Thread-take 2

Post by Solex68 » Sat May 25, 2019 5:53 pm

If you don't have this book. I highly suggest you get it in paperback from DatsunParts or ebook on Amazon. Book Two is the only one needed for servicing but they all have some value.
https://www.datsunparts.com/2458
Everything matters, especially if you are troubleshooting later in life...Per Scott Scheeler's book...
Place the camshaft sprocket and rear jackshaft sprocket into the
upper timing chain. Align the dimples in the face of the gears with the shiny
links in the chain. With the jackshaft sprocket at the bottom the shiny links
should be on the carburetor side of the engine. There should be 38 chain
links between the timing marks (shiny links). If you did not buy NISSAN
chains you probably will not have any shiny links. Unfortunately for you, in
this case, you are on your own. You will have to carefully count the chain
links. When this step is completed the sprockets are in the “ASSEMBLY”
position. The camshaft sprocket timing mark should be at the 3 o’clock
position and the jackshaft sprocket timing mark should be at approximately
the 5 o’clock position. The camshaft sprocket dowel hole should be at the 12
o’clock position with the two camshaft bolt holes horizontal.

___
Chain Alignment 3b.jpg
Or follow the Datsun Roadster Service Manual - good luck with that ;)
You do not have the required permissions to view the files attached to this post.
Greg a.k.a SOLEX68 - http://www.datsunvents.com/
Laguna Hills, CA
68 2000 U20
Always willing to help another Datsun Roadster owner
Pending installs: SS brake lines, Stan Stealth Dizzy, Denso TT plugs

User avatar
Gregs672000
Roadster Fanatic-Site Supporter
Posts: 6646
Joined: Fri Aug 07, 2009 11:47 pm
Location: Tacoma, WA

Re: The Quick/Small/(Stupid?) Question Thread-take 2

Post by Gregs672000 » Sat May 25, 2019 8:26 pm

Yes, do not attempt to build your engine without at least the factory manual!
Greg Burrows
'67 2000 #588
Tacoma, WA

User avatar
2mAn
Roadsteraholic
Posts: 1698
Joined: Mon Jan 09, 2017 5:02 pm
Location: Inglewood, CA

Re: The Quick/Small/(Stupid?) Question Thread-take 2

Post by 2mAn » Sun May 26, 2019 6:52 pm

How'd I do :)

Image
Simon
Current Cars:
-1986 BMW 325e - pursuit of happiness
-1968 Datsun Roadster 2000 - happiness of pursuit

david premo
Roadster Nut-Site Supporter
Posts: 186
Joined: Wed Jan 24, 2007 8:23 am

Re: The Quick/Small/(Stupid?) Question Thread-take 2

Post by david premo » Sun May 26, 2019 7:12 pm

You might be a tooth off.

User avatar
2mAn
Roadsteraholic
Posts: 1698
Joined: Mon Jan 09, 2017 5:02 pm
Location: Inglewood, CA

Re: The Quick/Small/(Stupid?) Question Thread-take 2

Post by 2mAn » Sun May 26, 2019 7:33 pm

david premo wrote:
Sun May 26, 2019 7:12 pm
You might be a tooth off.
Crank was at TDC (where it was prior to this) so Im not sure if theres enough to move it a tooth over.

Should I put the tensioner back on and see how it looks then?
Simon
Current Cars:
-1986 BMW 325e - pursuit of happiness
-1968 Datsun Roadster 2000 - happiness of pursuit

User avatar
Solex68
Site Supporter
Posts: 1440
Joined: Fri May 25, 2012 3:30 pm
Location: Laguna Hills, CA
Model: 2000
Year: High Windshield-68-70

Re: The Quick/Small/(Stupid?) Question Thread-take 2

Post by Solex68 » Sun May 26, 2019 7:35 pm

It's hard to tell but I'd side with Premo. At least double check. I drew lines on the known good and your set up. It's worth double checking or just removing gears and doing over again.
***
Yours
Might be off 1 tooth.png
_-_
and known Good
Known Good Chain Alignment 3.jpg
You do not have the required permissions to view the files attached to this post.
Greg a.k.a SOLEX68 - http://www.datsunvents.com/
Laguna Hills, CA
68 2000 U20
Always willing to help another Datsun Roadster owner
Pending installs: SS brake lines, Stan Stealth Dizzy, Denso TT plugs

User avatar
2mAn
Roadsteraholic
Posts: 1698
Joined: Mon Jan 09, 2017 5:02 pm
Location: Inglewood, CA

Re: The Quick/Small/(Stupid?) Question Thread-take 2

Post by 2mAn » Sun May 26, 2019 7:40 pm

ok, no problem, its easy enough to do right now
Simon
Current Cars:
-1986 BMW 325e - pursuit of happiness
-1968 Datsun Roadster 2000 - happiness of pursuit

User avatar
Curtis
Site Supporter
Posts: 2577
Joined: Fri Jan 01, 2010 2:49 pm
Location: Des Moines, WA

Re: The Quick/Small/(Stupid?) Question Thread-take 2

Post by Curtis » Sun May 26, 2019 8:55 pm

As I learned not long ago there is a difference between the SAE and metric cam and cam gear. Be sure you don't have a mix as it will be half a tooth off.
66 stroker
67 basket case, the renewal has begun.

User avatar
Gregs672000
Roadster Fanatic-Site Supporter
Posts: 6646
Joined: Fri Aug 07, 2009 11:47 pm
Location: Tacoma, WA

Re: The Quick/Small/(Stupid?) Question Thread-take 2

Post by Gregs672000 » Sun May 26, 2019 9:11 pm

Good eyes there! You're a tooth off on the cam chain per the manual image. The cam's timing mark should be in the middle of a link. Note the difference in the pics. Can't be seen in the pics with the lines, just in your original.

Is there a metric and an SAE gear for a U20? Thought that was R engine only.
Greg Burrows
'67 2000 #588
Tacoma, WA

User avatar
Curtis
Site Supporter
Posts: 2577
Joined: Fri Jan 01, 2010 2:49 pm
Location: Des Moines, WA

Re: The Quick/Small/(Stupid?) Question Thread-take 2

Post by Curtis » Sun May 26, 2019 9:21 pm

Gregs672000 wrote:
Sun May 26, 2019 9:11 pm
Good eyes there! You're a tooth off on the cam chain per the manual image. The cam's timing mark should be in the middle of a link. Note the difference in the pics. Can't be seen in the pics with the lines, just in your original.

Is there a metric and an SAE gear for a U20? Thought that was R engine only.
Darn thing looks like a 1600... Didn't look close OR read.
66 stroker
67 basket case, the renewal has begun.