[TECH] 3a/JH HYbrid need help...please!

[txrocco at sbcglobal.net (ATS - Patrick Bureau)]

dan ...breath in breath out.

I understand what your saying, so if I want to keep the JH distributor, then
I should un-wire the knock box, since I already have my electrical done, I
will simply get a 3a distro, I just WISHED someone would made that clear in
ALL the Engine conversions out there..  EVERYONE (that has a engine hybrid
web page say use a JH (with adaptor or 3a) just install a knock box and
you'll be fine. (not to mention wasted the $$ on a JH distro/3a engine kit.)


Greg : I got your email and thank you very much for making an explanation in
LAMENTS (read mechanical idiot proof) what was going on with my timing. much
appreciated.

ATS - Patrick Bureau - txrocco@sbcglobal.net
Http://www.longcoeur.com/scirocco/
============================================
'85 2.0L Prowler Orange Kamei X1 Rocco
'85 1.8L Titian Red Rocco (daily driver)
'98 4.0L Jeep Cherokee
'91 7.3L F250 diesel Super cab,8 Ft box.



=>-----Original Message-----
=>From: Dan Bubb [mailto:jdbubb@ix.netcom.com]
=>Sent: Tuesday, May 27, 2003 8:25 AM
=>To: ATS - Patrick Bureau; _Scirocco Mailing List
=>Subject: Re: [TECH] 3a/JH HYbrid need help...please!
=>
=>
=>Well, on this issue I have to insist! (once again, I'm not EVERYONE!)
=>The knock box electronically provides all the advance the engine needs for
=>all conditions.
=>Using a JH mechanical advance distributor WILL give you roughly twice the
=>advance the engine should have.
=>Maybe the knock sensor is smart enough to back out some of this advance if
=>the engine is knocking, but your timing will not be optimal! (closer to
=>dismal!)
=>I'll bring a knock sensor distributor to Cincy and convince you if you
=>haven't changed over before then.
=>Dan
=>As an aside; most people on Vortex (EVERYONE!) seems to think that their
=>engine will be faster if they can just get more advance and more
=>fuel! Where
=>do they get these ideas?
=>
=>
=>----- Original Message -----
=>From: "ATS - Patrick Bureau" <txrocco@sbcglobal.net>
=>To: "_Scirocco Mailing List" <scirocco-l@scirocco.org>
=>Sent: Monday, May 26, 2003 12:34 PM
=>Subject: [TECH] 3a/JH HYbrid need help...please!
=>
=>
=>> Dan, I understand what you are saying;
=>>
=>> The knock box uses it electrical inputs and vacuum line to adjust itself
=>to
=>> the crank position, now the vacuum of the knock has been set to the
=>booster
=>> port of the line that runs from the booster to the intake manifold, and
=>yeah
=>> the timing and idle has MUCHO improved.
=>>
=>> But I am not convinced I need a 3a distro, because well EVRYONE says you
=>can
=>> use a JH distro, and too many companies are selling the conversion kit
=>> adaptor plate and gears for the JH distro to be used with a 3a block.
=>>
=>> blocking the advance vacuum post on the distro may or may not
=>be the right
=>> way of doing it, (though I would not see why we be using an KS vacuum
=>> advance AND a JH distro advance as well (then again maybe I
=>should try to
=>> see what would come of it by reconnecting the JH distro into the TB port
=>> where it used to be before.
=>>
=>> IF any 3a/JH hybrid rocco-head has this setup please speak up, I have
=>right
=>> now the timing on +6 (timing light) and duty cycle at 29-39 % (26-31 is
=>too
=>> lean the car stalls on idle all the time)
=>>
=>> Pointers really appreciated at this point.
=>>
=>>
=>>
=>> ATS - Patrick Bureau - txrocco@sbcglobal.net
=>> Http://www.longcoeur.com/scirocco/
=>> ============================================
=>> '85 2.0L Prowler Orange Kamei X1 Rocco
=>> '85 1.8L Titian Red Rocco (daily driver)
=>> '98 4.0L Jeep Cherokee
=>> '91 7.3L F250 diesel Super cab,8 Ft box.
=>>
=>>
=>>
=>> =>-----Original Message-----
=>> =>From: scirocco-l-bounces@scirocco.org
=>> =>[mailto:scirocco-l-bounces@scirocco.org]On Behalf Of Dan Bubb
=>> =>Sent: Monday, May 26, 2003 6:19 AM
=>> =>To: ATS - Patrick Bureau; _Scirocco Mailing List
=>> =>Subject: KS distributor, was Re: 1.8 8v jh swap done......no power
=>> =>
=>> =>
=>> =>Patrick:
=>> =>If you're using the standard JH distributor, even with vacuum advance
=>> =>disabled, in conjunction with Knock Sensor ignition you'll have
=>> =>WAY too much
=>> =>advance above idle. The KS box needs a signal that is fixed
=>relative to
=>> =>crankshaft position. All the advance is done electronically. The JH
=>> =>distributor will add 24 degrees of advance on top of the KS advance.
=>> =>Tell me I misread your statement and you're not using the JH
=>distributor.
=>> =>Just wanting your engine to be all it can be!
=>> =>Dan
=>>
=>>
=>> _______________________________________________
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