• Hey Guest!
    British Car Forum has been supporting enthusiasts for over 25 years by providing a great place to share our love for British cars. You can support our efforts by upgrading your membership for less than the dues of most car clubs. There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Upgraded members don't see this banner, nor will you see the Google ads that appear on the site.)
  • When posting a classified ad, you MUST select a prefix from the drop-down next to the subject line. If you don't you will get an error and your ad will not be posted!
Tips
Tips

TR2/3/3A TR3A Engine Startup Follies

Share this page

Joe Alexander sells one. It's not on his site, but I've seen it somewhere. He's also selling an improved rear seal that requires no crank machining. They modify a stock seal somehow to accept a split rubber seal. I'd bet a dollar that Joe's mandrel works. If anyone would know that he factory spec. is wrong, he would.
 
Joe's tool is made to the same dimensions that Art described.
 

Attachments

  • 22875.jpg
    22875.jpg
    28.9 KB · Views: 146
DougF said:
On the back side of the Unisyn there is a dial that adjusts the airflow through the unit. It can be opened and closed to compensate for the amount of air flowing into the carbs.
Click to expand...
You can also make the unit much more sensitive, by tilting the tube with the floating ball. I found that to be essential, as closing the venturi enough to float the ball straight up was making the engine run bad (thereby distorting the reading when moving from carb to carb).
 
And the BPNW tool looks like Joe's so I'm assuming he's marketing it similar to other stuff he makes. My micrometer skills are a little rough, but the smaller diameter I think I'm getting 2.6245 as shown, the larger diameter to me seems closer to 2.815, even smaller than Hardy's recommendation - but that just may be my lack of micrometer skills.
 
Back
Top