Maybe an electronic Ignition is in order here.
-----Original Message-----
From: datsunmike <datsunmike@nyc.rr.com>
To: Patrick P. Castronovo <slick1@mohaveaz.com>; Robert.Long@CSDInc.com
<Robert.Long@CSDInc.com>; datsun-roadsters@autox.team.net
<datsun-roadsters@autox.team.net>
Date: Thursday, June 07, 2001 2:33 PM
Subject: Re: valve adjustment/ smog plugs x-mac-creator="4D4F5353"
>Adjusting SUs on 1600s is different. I am able to get everything to spec
but
>the engine just won't idle smoothly at 600 RPMs. It will run smoothly at
>about 850 w/o shaking the car.
>
>I readjusted my 2L carbs today and now I have a steady idle at about 800
>RPMs and the engine is smooth. Boy, the 2L linkage makes it a snap to
adjust
>the high RPM area.
>
>Also has a 2" exhaust I had put on the car today and the guys who did it
>were great and went the extra mile to do it right. My car runs much
stronger
>and now sounds like a car as opposed to my 22 YO stock exhaust which snaked
>down to about 1.25" pipes and went putt putt. I've got a baby turbo on it
>and it's loud but not obnoxious IMHO but I'm sure others would disagree :)
>
>Now let's go scare little ol ladies!!!!!!!!!
>
>Mike
>
>----- Original Message -----
>From: "Patrick P. Castronovo" <slick1@mohaveaz.com>
>To: "datsunmike" <datsunmike@nyc.rr.com>; <Robert.Long@CSDInc.com>;
><datsun-roadsters@autox.team.net>
>Sent: Thursday, June 07, 2001 9:15 AM
>Subject: Re: valve adjustment/ smog plugs x-mac-creator="4D4F5353"
>
>
>> My car has the Solex Carbs. Let me try to explain how to balance the
>carbs.
>> Most people would start fiddling with the adjustment between the carbs
>> without a thought as to what they were doing. Here is how I do it. Have
>> someone sit in the drivers seat, and depress the Accelerator pedal to the
>> floor.(Engine Off) or you can manually hold it(First Carb Butterfly,
>> closest to gas pedal linkage) open under the hood. While holding the
first
>> butterfly fully open, adjust the balancing screw located between the
carbs
>> until the second set of carbs are fully open. If you go too far with the
>> balance screw I believe you will begin to close the Butterfly on the
first
>> Carb. You must get them the same. After you accomplish this and setting
>> the Lock nut, you can start your engine and adjust your air screws. I am
>> sure this will improve the performance as well as the mileage on SOME of
>the
>> cars out there.
>>
>> When I bought my Corvair 140 HP engine, I set it onto a Milk crate and
put
>> some gas into a coke bottle with a line from there to the fuel pump, and
>> fired the engine up. It ran great, or so I thought. I thought it had
>power
>> to spare as It was revved up. I have a habit of feeling the exhaust for
>> heat differences. One side was hot to the Max, and the other side was
>stone
>> cold. I realized why the PO sold it. I found there was paper lodged in
>the
>> fuel line from the fuel pump to one side of the carbs. After blowing the
>> line with compressed air, the other side then began to function after it
>had
>> drawn fuel into the carb. The difference was staggering. I thought I
had
>> unleashed the Tiger from the tank. The Point is: Had I put that engine
>into
>> the vehicle without finding that problem, I may have thought the way that
>> engine ran was normal, and just let it be. Pat
>> -----Original Message-----
>> From: datsunmike <datsunmike@nyc.rr.com>
>> To: Patrick P. Castronovo <slick1@mohaveaz.com>; Robert.Long@CSDInc.com
>> <Robert.Long@CSDInc.com>; datsun-roadsters@autox.team.net
>> <datsun-roadsters@autox.team.net>
>> Date: Thursday, June 07, 2001 5:05 AM
>> Subject: Re: valve adjustment/ smog plugs x-mac-creator="4D4F5353"
>>
>>
>> >Pat,
>> >
>> >No, nothing with the balance of the engine as many books I rread on
>Datsuns
>> >say the engines are well balanced from the factory. It's probably due to
>> the
>> >dual carbs. Dave Pesky owns a single SU 1500 and his car runs well at
600
>> or
>> >700 rpms.
>> >
>> >I had the same problem with my Z too until I put on a single Holley 4
>> >barrel. Although in the Z it did idle much better probably due to the
>fact
>> >it's a 6 and has a better firing balance or internal movement balance.
>> >Straight 6s are the smoothest of all engines.
>> >
>> >Mike
>> >
>> >----- Original Message -----
>> >From: "Patrick P. Castronovo" <slick1@mohaveaz.com>
>> >To: "datsunmike" <datsunmike@nyc.rr.com>; <Robert.Long@CSDInc.com>;
>> ><datsun-roadsters@autox.team.net>
>> >Sent: Wednesday, June 06, 2001 10:14 PM
>> >Subject: Re: valve adjustment/ smog plugs x-mac-creator="4D4F5353"
>> >
>> >
>> >> Would that have anything to do with engine out of balance? Pat
>> >>
>> >>
>> >> -----Original Message-----
>> >> From: datsunmike <datsunmike@nyc.rr.com>
>> >> To: Patrick P. Castronovo <slick1@mohaveaz.com>;
Robert.Long@CSDInc.com
>> >> <Robert.Long@CSDInc.com>; datsun-roadsters@autox.team.net
>> >> <datsun-roadsters@autox.team.net>
>> >> Date: Wednesday, June 06, 2001 5:01 PM
>> >> Subject: Re: valve adjustment/ smog plugs x-mac-creator="4D4F5353"
>> >>
>> >>
>> >> >"Valve Clearance Intake & Exhaust .017 Cold"
>> >> >
>> >> >Should say HOT.
>> >> >
>> >> >BTW, can any of you get your car to idle well at 600 RPMs? I can't
and
>> >> never
>> >> >could.
>> >> >
>> >> >Mike
>> >> >
>> >> >----- Original Message -----
>> >> >From: "Patrick P. Castronovo" <slick1@mohaveaz.com>
>> >> >To: <Robert.Long@CSDInc.com>; <datsun-roadsters@autox.team.net>
>> >> >Sent: Wednesday, June 06, 2001 3:52 PM
>> >> >Subject: Re: valve adjustment/ smog plugs x-mac-creator="4D4F5353"
>> >> >
>> >> >
>> >> >> Linda:
>> >> >> In my tune up book it reads:
>> >> >>
>> >> >> 1965-1969 SPL311(1600 engine)
>> >> >>
>> >> >> Spark Plugs NGK BP-6E Gap .28 -.32
>> >> >>
>> >> >> Distributor Point Dwell Degree 49-55
>> >> >> Point Gap Inches .018 - .022
>> >> >>
>> >> >> Basic Ignition Timing Degrees 16BTDC @ 600 RPM
>> >> >>
>> >> >>
>> >> >> Compression Pressure (PSI) @ 350 RPM 181 PSI
>> >> >>
>> >> >> Valve Clearance Intake & Exhaust .017 Cold
>> >> >>
>> >> >> Idle Speed 600 RPM
>> >> >>
>> >> >> Firing Order 1 3 4 2
>> >> >>
>> >> >> #1 Cylinder is the front, #2 is next, #3 is next, and #4 is last.
>> >> >>
>> >> >> Distributor turns Counter Clockwise
>> >> >>
>> >> >> As you put your finger over each hole in the firing order, 1 3 4 2.
>> >you
>> >> >> will feel air come out of the Spark Plug hole. That means the
>valves
>> >are
>> >> >> both closed. Adjust them now, in this position. Rocker arms up off
>> the
>> >> >> Valves. When the valves are open, allowing movement of Air and Gas
>> >> in/out
>> >> >> of the chamber, the rocker, or Cam is pushing down on the valve
>> >> >compressing
>> >> >> the spring. The spring moves the Valve to the Closed Position so
it
>> >> forms
>> >> >> an airtight seal in the Cylinder.
>> >> >>
>> >> >> >List,
>> >> >> >A question on the cold valve adjustment- Is it 0.20 or 0.21, and
on
>a
>> >> >> >1600 can you adjust the intake and exhaust of the cylinder the
dist
>> >> >> >rotor is pointing to together? Also I am still confused about
being
>> >sure
>> >> >> >that valves are fully open or closed-Is that when the pushrods are
>> >fully
>> >> >> >up, the rockers are down and springs are compressed? So at TDC,
>> >> >> >compression stroke, #1, are #1 valves adjusted or not? Someone
>> >mentioned
>> >> >> >the 9 rule, or something like that, is that the only way?
>> >> >> >Second question on plugs. What is the exact size for the intake
>> plugs
>> >> >> >so I know what to ask for. I know about the injector plugs in the
>> head
>> >> >> >already, they have not been done yet.
>> >> >> >Questions form A to Z...
>> >> >> >Linda
|