[Healeys] Converting from HS4 to HS6 carbs

[Alan Seigrist]

yes, to be honest even the three HD8s on the Jag E-type is overkill.
smaller throats should actually give you better torque off the line.

On Tue, Dec 3, 2019 at 2:56 PM i erbs <eyera3000 at gmail.com> wrote:

> My 100-6 has a MKI engine .060 over, Issky perfomance cam and it has a
> balanced engine. I bought a tri carb setup, traded it for a pair of HD8s
> and built a cable throttle system. Im very happy with it, other than hot
> idle issues.  I get around 23 mpg on the road and its more responsive. But
> I hsve to say three carbs look great under the bonnet. As others have ssid,
> without hotting up the engine, no need to go bigger cfm.
>
> Ira Erbs
> Portland,OR
> 1959 Austin Healey BN4
> 1967 MGB
>
> On Mon, Dec 2, 2019, 8:02 PM John Spaur <jmsdarch at sbcglobal.net> wrote:
>
>> It’s not that I want too. Burlen S.U has not shown HS4’s as being
>> available on their website for over a year now but the HS6’s are. I had
>> emailed them several times but they don’t respond to emails. I finally got
>> around to calling them and they said they had the parts and could build a
>> set. So, I placed an order.
>>
>>
>>
>> John
>>
>>
>>
>> *From:* Healeys [mailto:healeys-bounces at autox.team.net] *On Behalf Of *Michael
>> Salter
>> *Sent:* Monday, December 2, 2019 7:35 AM
>> *To:* Bob Spidell <bspidell at comcast.net>
>> *Cc:* healeys at autox.team.net
>> *Subject:* Re: [Healeys] Converting from HS4 to HS6 carbs
>>
>>
>>
>> I can confirm that converting my first 6 cylinder race car, with a
>> standard MkII engine, to HS6 carbs without any other mods improved my lap
>> times at our home circuit by absolutely 0.00 seconds ... seriously
>> disappointing 😕😕
>>
>>
>>
>> On Mon, Dec 2, 2019, 9:50 AM Bob Spidell, <bspidell at comcast.net> wrote:
>>
>> John, have to ask why you'd want to do this.  I'm not Edd China--or even
>> Ant Anstead--but from all I've seen and heard just adding greater air flow
>> capacity, without other mods--cam, headers, etc.--does more harm than
>> good.
>>
>> I think I read somewhere that Geoff Healey thought BJ8s were
>> 'over-carburetted' (maybe why headers supposedly add a few HP without other
>> mods).
>>
>> Bob
>>
>> On 12/2/2019 5:52 AM, warthodson--- via Healeys wrote:
>>
>> You will need H6 intake manifolds or machine out your HS4 manifolds. I am
>> not sure about the linkage.
>> Gary Hodson
>>
>> -----Original Message-----
>> From: John Spaur <jmsdarch at sbcglobal.net> <jmsdarch at sbcglobal.net>
>> To: healeys <healeys at autox.team.net> <healeys at autox.team.net>
>> Sent: Mon, Dec 2, 2019 12:17 am
>> Subject: [Healeys] Converting from HS4 to HS6 carbs
>>
>> If I change from triple HS4 to triple HS6 carbs can I just swap them out
>> or do I have to change the linkage and other components?
>>
>>
>>
>> John Spaur
>>
>> ’62 BT7
>>
>>
>>
>>
>>
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