OK, I misremembered. Sorry for confusion. What I had originally was an A15 with the small oval port head with swirl obstruction. The intake had round ports, not oval. Like this one from the wiki:




At the time I assumed the round port intake was used to enhance runner velocity for low speed acceleration. Since I was thinking of modifying a stock intake for a side drought carb I bought a proper oval port intake when I found my H89 head. The intakes and the carbs are both gone now so I can't get numbers.

Seems there were several versions of each engine type each model year for each regional market.

When I bought it my A15 was a California nifty 50 with the shroud port head and a round port intake.

They might be on the site somewhere but here they are. AutoCAD DWG format.


http://www.filedropper.com/datsunaseriesportflanges

Awesome thread. I love ephemera. The collected items are in amazing condition.

Are any of the decals reproduced? What about the little fella in the center of the ashtray?

Thanks. I'll follow through with the plan. Been putting off for a long time. Dizz arrived today. Pretty!

Been a while since I last posted. Howdy everyone.

My A15 Midget is doing all right. I have long wanted to upgrade the ignition. I have the "matchbox" distributor. It is old and has never been adjusted or upgraded. Does the job. But I do worry about the plastic bearing plate as well as the non-upgradable module. So I recently bought a rebuilt Hitachi D4F external box dizz to use with a GM HEI-style 4 pin module (like I have done with the Ford Duraspark dizz). So, the plan is to use it with these parts:

Low resistance coil (Pertronix 45011 Coil black (oil filled) 0.6 ohm) without ballast resistor

PerTronix D72000 Flame-Thrower HEI III GM 4-Pin Module w/ Multi-Spark/ Rev-Limit

PRIMARY GOAL:
1) A good dizz that is mechanically within spec and can be easily recurved to better work with my cam and is stable at 6000+ RPMs.
2) Powerful, reliable spark that is stable at 6000+ RPMs.
3) Rev control without bulk or extra modules.

SECONDARY GOAL:
Getting the carbs tuned to match the engine and might allow me to rev over 5500 cuz this thing should do that but does not quite make it now.

TERTIARY GOAL: Win the lottery. Admittedly off-topic here.

Before I go and order the coil & module I just want to check that this plan is sound and these parts are appropriate.

The Nodiz looks like a nifty bit of kit. What trigger wheel did you use and how did you mount it to the pulley?

OK. I guess I should just disassemble it to clean and asses the condition of the plastic parts. Then I can have the curve adjusted and get on with life. Thanks!

Folks,

I am interested in replacing the dizz in my A15. It is a early 80s electronic unit with the matchbox module on the side. I would like to continue to use an electronic dizz but type is not a problem, I will change the wiring to it as required. Also would be interested in a compatible coil. Interested in what the forum thinks would be the preferred options.

The advance cure should be adjustable or perhaps already recurved.

Engine specs:
A15 short block
H89 head port matched to a GX intake, with GX valve springs
Dual HIF4 SU carbs
Pretty much stock compression (USA market H95-style dished pistons)
Cam: Delta regrind, 262D, .425 lift at valve
5 speed trans
It's in an MG Midget (Austin Healey Sprite). 3.7 rear end, about 1600 lbs (725kg)

Port mismatch is easily overcome with some port matching. Port match, don't gasket match.