[Roadsters] screw thread size for hitachi carbs

[Linda J]

So the ones available from Dean and Rallye are non- standard?

Linda

Sent from my iPod

On Jul 6, 2013, at 5:51 AM, keith0alan at aol.com wrote:

> Hello all,
>
>    As far as I know all 1600 carbs are 5x.75 pre ISO French standard
metric.
> I have never found anyone making them. Early 2000 carbs are the same. Late
> 2000 and Z carbs are ISO 5x.8 and are commonly available. There are a
couple
> of options. There is a number size screw quite close. .75mm threads are
33.8
> tpi, .8mm is 31.75 tpi. The .75 hole can be tapped to .8 . You loose some
> material but it does work. What I do is take the original screws and
lightly
> tap the head to push the metal back into place then tap a new phillips bit
> into the recess to reform the head. A little fiddly but it works. Carefully
> cutting a flat slot with a hack saw is an option but pretty far down the
list.
> Always take good care of your original screws using a proper fitting screw
> driver. Some penetrating oil and a little heat will help loosen them. I
will
> also grab them with a tiny pair of vice grips. This will mark them up a
little
> but saves the screwdriver recess.
>
> keith williams
>
>
> -----Original Message-----
> From: ppeters914 <ppeters914 at comcast.net>
> To: Datsun Roadster List <datsun-roadsters at autox.team.net>
> Sent: Sat, Jul 6, 2013 1:01 am
> Subject: Re: [Roadsters] screw thread size for hitachi carbs
>
>
> Good luck, but.....
>
> The headlight retaining screws on the 411 are 4mm with that odd .75 pitch.
I
> checked with Tacoma Screw, Maryland Metric, and several others. They don't
> exist.
>
> Googling found one reference to an old (WWII?) French rifle part.
>
> Maybe Ztherapy?
>
> Pete
> Sent via BlackBerry by AT&T
>
> -----Original Message-----
> From: "Gordon Glasgow" <gsglasgow at comcast.net>
> Sender: datsun-roadsters-bounces at autox.team.netDate: Fri, 5 Jul 2013
22:02:08
> To: 'robert williams'<wilrobasy at hotmail.com>;
> <datsun-roadsters at autox.team.net>
> Subject: Re: [Roadsters] screw thread size for hitachi carbs
>
> Disclaimer: These are the sizes I measured on my 2000 SU's, but I don't
> think the 1600 ones are necessarily different. Oddly, my parts manual lists
> the same part number for both the piston pot screws and the float bowl
cover
> screws on the 2000 SU's (contradicting what I just measured), but different
> numbers for those two screws on the 1600.
>
> The screws for the piston pots are 5mm x 0.8 pitch. That's pretty standard.
>
> The screws for the float bowl covers are 5mm x 0.75 pitch, which is
> definitely not standard. I believe it's called a French Metric. You might
be
> able to special-order them through a place like Tacoma Screw Products if
the
> vendors don't have them.
>
> Gordon Glasgow
>
> -----Original Message-----
> From: datsun-roadsters-bounces at autox.team.net
> [mailto:datsun-roadsters-bounces at autox.team.net] On Behalf Of robert
> williams
> Sent: Friday, July 05, 2013 7:37 AM
> To: datsun-roadsters at autox.team.net
> Subject: [Roadsters] screw thread size for hitachi carbs
>
> Hello List,
>
> The ground up resto is in the home straight so looking to finish up a few
> smaller items.
> Does anyone know the thread size of the following screws:
> 4 x phillips head screws that fasten the top of the float bowls on the
> hitachi carbs 4x screws for the piston pots on the carbs for an early
(1966)
> 1600 low screen.
>
> I thought they may be 11/32 unf but alas they seem to be a smaller.
> The tops of my screws are burred and battered from years of abuse so
thought
> I would replace them.
>
> regards,
>
> Rob
> ________________________________________
>
> datsun-roadsters at autox.team.net
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe:
>
http://autox.team.net/mailman/options/datsun-roadsters/gsglasgow@comcast.net
> ________________________________________
>
> datsun-roadsters at autox.team.net
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe:
>
http://autox.team.net/mailman/options/datsun-roadsters/ppeters914@comcast.net
> ________________________________________
>
> datsun-roadsters at autox.team.net
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe:
> http://autox.team.net/mailman/options/datsun-roadsters/keith0alan@aol.com
> ________________________________________
>
> datsun-roadsters at autox.team.net
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe:
http://autox.team.net/mailman/options/datsun-roadsters/ljordan704@netscape.ne
t