[Healeys] HS4 Tri-carb tuning

warthodson at aol.com warthodson at aol.com
Tue Jul 7 08:26:34 MDT 2020

John,Are all 3 carb interconnecting throttle linkages disconnected during all the tuning steps? I have never seen this test before in any literature, so I have never tried the test on my tri-carb setup. I will give it a try later today & let you know what I find.If your 3 carbs all perform the same on all the other tests, I think they will perform correctly together. I am assuming you have confirmed that all 3 carbs have the same needle. Also, when you say the "piston is lifted all the way up" you are referring to lifting the piston by the pin, (approximately 1/2" pin travel), not by literally lifting the piston all the way up.Gary Hodson

-----Original Message-----
From: John Spaur via Healeys <healeys at autox.team.net>
To: healeys at autox.team.net
Sent: Mon, Jul 6, 2020 9:07 pm
Subject: Re: [Healeys] HS4 Tri-carb tuning

#yiv2118873180 #yiv2118873180 -- _filtered {} _filtered {} _filtered {}#yiv2118873180 #yiv2118873180 p.yiv2118873180MsoNormal, #yiv2118873180 li.yiv2118873180MsoNormal, #yiv2118873180 div.yiv2118873180MsoNormal {margin:0in;margin-bottom:.0001pt;font-size:11.0pt;font-family:sans-serif;}#yiv2118873180 a:link, #yiv2118873180 span.yiv2118873180MsoHyperlink {color:#0563C1;text-decoration:underline;}#yiv2118873180 a:visited, #yiv2118873180 span.yiv2118873180MsoHyperlinkFollowed {color:#954F72;text-decoration:underline;}#yiv2118873180 pre {margin:0in;margin-bottom:.0001pt;font-size:10.0pt;}#yiv2118873180 span.yiv2118873180HTMLPreformattedChar {font-family:Consolas;}#yiv2118873180 span.yiv2118873180EmailStyle19 {font-family:sans-serif;color:windowtext;}#yiv2118873180 span.yiv2118873180EmailStyle20 {font-family:sans-serif;color:#1F497D;}#yiv2118873180 .yiv2118873180MsoChpDefault {font-size:10.0pt;} _filtered {}#yiv2118873180 div.yiv2118873180WordSection1 {}#yiv2118873180 Bob, raising the piston 1/32” is not my issue. I am wondering why the engine stalls when the center carb piston is lifted all the way up and the others don’t stall the engine when lifted all the way up. I sent another post with a link for that. The carbs are well synced, I used the S.U tuning kit to check the piston lift and they are spot on.  thodson at aol.com

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