X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from nm27.access.bullet.mail.sp2.yahoo.com ([98.139.44.154] verified) by logan.com (CommuniGate Pro SMTP 5.4.0) with SMTP id 5040544 for flyrotary@lancaironline.net; Sat, 02 Jul 2011 09:53:20 -0400 Received-SPF: none receiver=logan.com; client-ip=98.139.44.154; envelope-from=keltro@att.net Received: from [98.139.44.103] by nm27.access.bullet.mail.sp2.yahoo.com with NNFMP; 02 Jul 2011 13:52:44 -0000 Received: from [98.139.44.71] by tm8.access.bullet.mail.sp2.yahoo.com with NNFMP; 02 Jul 2011 13:52:44 -0000 Received: from [127.0.0.1] by omp1008.access.mail.sp2.yahoo.com with NNFMP; 02 Jul 2011 13:52:44 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 45040.5259.bm@omp1008.access.mail.sp2.yahoo.com Received: (qmail 25133 invoked by uid 60001); 2 Jul 2011 13:52:43 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=att.net; s=s1024; t=1309614763; bh=uUF1/dtum4npemZMdSzo+e9H/9Ni1NgAepma/VW00WE=; h=X-YMail-OSG:Received:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=oqpKKY+ieKqU8n7RLzOcZyA0l2Rix4er73KkGAI/8vttIQyHZH1aERqxBmHcjvkOJGgNHlzGrE01Jor8TG0Ibwq3i2Kze2be/B41JqLqqAZFCILCmQxmsutJJNWe6+HA28FWq5mHjeZhKQcRuWWfdB4z3uyvRwGaxPMZf6u2qRU= DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=att.net; h=X-YMail-OSG:Received:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=oZ11Y87DfEAiKcxj2rH4GbDicqinKNSKB1H5xGN4SjajN3uDEbtXSV5lQZ0Vh57RkuNHsESedC0UJdSEnJMI0jJJC7gU3Qwm4atshUs0QqIMMWnzHQ6qMXZ7FeeWSW8cZxXnAXR2F/tGuI8o6RLPUt37T9MXoU0qccVuvBPhB3E=; X-YMail-OSG: kwNlZdkVM1l40fOgHgvkAmXaIVElBdebEBvufMaztN57BHU ferVmIcPeMrQ1PnrG3dKLiikUjOZHCTUBTlB7Vh2TRKNgs0FloZBHwUxxmeV C0WoAgJz8OYEXthfDGbYy6QWtXpNa9JogDZnVol3MZVxI.6UoGpl4MG_4c6Q yBQfqwiwBqK3_vlpSi5kwQZtNufQuPKzIxByG8h.L2jMpFGcvGQjvAM1vQ_2 2VTz.ztYmIRChB2Adf6c3Zk2ohytCyrPDwRFaexzzRGlUAjBl9eOhY8nD3Kg L4ynt4ysLEdGGlmCJGXfj4fuqE_jFjNbTeWhY84zxYLWIINM8CzhwWhMSoiC _B7OATVkQ7dMOTJfTUI8IdDHFKlj4FnzaadX2EESZhSlxaQem9u04dpBkzcd XFolB.VjSmQKRlyHmxwEG8Jk- Received: from [208.114.39.18] by web83902.mail.sp1.yahoo.com via HTTP; Sat, 02 Jul 2011 06:52:43 PDT X-Mailer: YahooMailWebService/0.8.112.307740 References: Message-ID: <1309614763.13687.YahooMailNeo@web83902.mail.sp1.yahoo.com> Date: Sat, 2 Jul 2011 06:52:43 -0700 (PDT) From: Kelly Troyer Reply-To: Kelly Troyer Subject: Re: [FlyRotary] Leaking injectors? To: Rotary motors in aircraft In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-1098916090-1309614763=:13687" --0-1098916090-1309614763=:13687 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Ernest,=0A=A0=A0=A0 Your=A0EFI fuel pumps have a check valve in them and wi= ll hold regulated=A0pressure=0Afor a long time or until leaky injectors rel= ieve this pressure..........Short of replacing=0Athe injectors the=A0fix is= to put a pressure relief orifice from the fuel=A0pressure line=A0to =0Athe= =A0fuel return line......This is the band-aid=A0fix commonly used for hi-mi= lage RX7's =0Aand "Mazdatrix" even sells a kit for this (I made my own for = my 88 Rx7).............The =0Aorifice needs to be small (I think I used 0.0= 20).............The fuel pump has enough=0Aexcess capacity to make up for t= he small amount of leakage when the engine is=A0=0Arunning...........Make t= he orifice very small...........I=A0bought a kit of micro sized bits =0Afro= m "Harbor Freight Aircraft Supply"........<:)...........Mark Steitle did th= is for leaky=0Ainjectors on his 20B..........Jump in here Mark.........Do y= ou recall what orifice size=0Ayou used ??..............=A0=A0=A0=A0=0A=0AKe= lly Troyer=0A"DYKE DELTA JD2" (Eventually)=0A"13B ROTARY"_ Engine=0A"RWS"_R= D1C/EC2/EM2=0A"MISTRAL"_Backplate/Oil Manifold=0A"TURBONETICS"_TO4E50 Turbo= =0A=0AFrom: Ernest Christley =0ATo: Rotary motors in = aircraft =0ASent: Friday, July 1, 2011 11:23 P= M=0ASubject: [FlyRotary] Leaking injectors?=0A=0AI was installing a coolant= overflow bottle today, working right next to the intake manifold.=A0 Kept = smelling gas.=A0 Then I noticed a little puddle inside the little depressio= n formed by a modification I just added.=A0 The new fiberglass didn't have = any paint on it, so that is why I could see through it.=A0 There was maybe = an ounce of gas floating around in the bottom of the manifold.=0A=0ACould I= have been running so rich during my test run that=A0 an oz of gas was left= on the manifold walls?=A0 Or could it be that it dripped through a leaky i= njector, even though I shut down by switching off the fuel pump in order to= relieve line pressure?=0A=0AI know some others have had problems with leak= y injectors.=A0 Does anyone have an idea for making them not quite so leaky= ?=0A=0A--=0AHomepage:=A0 http://www.flyrotary.com/=0AArchive and UnSub:=A0 = http://mail.lancaironline.net:81/lists/flyrotary/List.html --0-1098916090-1309614763=:13687 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
Ernest,
    Y= our EFI fuel pumps have a check valve in them= and will hold regulated pressure
for a long time or u= ntil leaky injectors relieve this pressure..........Short of <= SPAN style=3D"RIGHT: auto" id=3Dmisspell-1>replacing
the injectors the&nb= sp;fix is to put a pressure relief orifice from the fuel&nb= sp;pressure line  to
the fuel return line......This is the band-aid fix= commonly used for hi-milage RX7's
and "Mazdatrix" even sells a kit fo= r this (I made my own for my 88 Rx7).............The
orifice needs to be = small (I think I used 0.020)............= .The fuel pump has enough
excess capacity to m= ake up for the small amount of leakage when the engine is 
running...........Ma= ke the orifi= ce very small...........I bought a kit of = micro sized bits
from "Harbor Freight= Aircraft Supply"........<:)...........Mark Steitle did this for leaky
injectors on his 20B= ..........Jump in here Mark.........Do you recall what orifice size
you used ??.........= .....    
 
Kelly Troyer
"DYKE DELTA JD2" (Eventually)
"13B ROTARY"_ Engine
"= RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/O= il Manifold
"TURBONETICS"_TO4E50 Turbo

From:= Ernest Christley <echristley@n= c.rr.com>
To: Rotary = motors in aircraft <flyrotary@lancaironline.net>
Sent: Friday, July 1, 2011 11:23 PM
Subject: [FlyRotary] Leaking inj= ectors?

I was installing a coolant overflow bottle today, wor= king right next to the intake manifold.  Kept smelling gas.  Then= I noticed a little puddle inside the little depression formed by a modification I just added.=   The new fiberglass didn't have any paint on it, so that is why I cou= ld see through it.  There was maybe an ounce of gas floating around in= the bottom of the manifold.

Could I have been running so rich durin= g my test run that  an oz of gas was left on the manifold walls? = Or could it be that it dripped through a leaky injector, even though I shu= t down by switching off the fuel pump in order to relieve line pressure?
I know some others have had problems with leaky injectors.  Does = anyone have an idea for making them not quite so leaky?

--
Homepa= ge:  http://www.flyrotary.com/
Archive and <= SPAN id=3Dmisspell-15>UnSub:  http://mail.lancaironline.net:81/lists/flyrotary/List.html=


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