Re: [Chrysler300]Self Adjusting valves

From: "Michael Reed" <mrreed@xxxxxxxxx>

Date: Tue, 14 Apr 2009 07:24:45 -0400

... the aural impact of the clatter of 16 solid lifters has yet to be equalled either... Mike Reed in Lake Odessa, Michigan where it is still winter, regardless of what the calendar says. ----- Original Message ----- From: Rich Barber To: 'Warren Anderson' ; 'George Riehl' ; Chrysler300@xxxxxxxxxxxxxxx ; 'Bob Jasinski' Sent: Tuesday, April 14, 2009 1:36 AM Subject: RE: [Chrysler300]Self Adjusting valves All Chrysler 300's use reciprocating four-stroke cycle internal combustion engines. These engines tend to make increased horsepower at higher RPM-up to some thermal or mechanical limiting point. In earlier days RPM was limited by hydraulic tappets that tended to stay fully extended at high RPM and prevented intake and exhaust valve from fully closing. Solid tappets required additional maintenance and produced a noisier engine at times but allowed an engine to operate at higher RPM and horsepower. For instance, the 331 in3 hemi engine of 1955 was rated at 250 HP @ 4,600 RPM with hydraulic lifters and a single four barrel carburetor. By adding a "full race" camshaft and a second carburetor and converting from hydraulic to solid tappets/lifters, the upper end of the engine's operational range was raised to 5,200 RPM. If torque remained constant, the increased RPM would have resulted in a 283 HP rating. The modified camshaft and additional carburetor resulted in greater fuel and air flow and the new engine was rated at 300 HP @ 5,200 RPM. The rest is history. Subsequent technology enabled use of hydraulic tappets at higher RPM and also enabled properly feeding an engine with a single four barrel carburetor (or no carburetor at all with various types of fuel injection), but the visual impact of two four barrel carburetors, either in line under a Delta Wing air cleaner, or out at the ends of ram intake manifolds under their own individual goldine tin pots has yet to be equaled. Or, such is my understanding and belief. C-300'ly, Rich Barber Brentwood, CA 1955 Chrysler 300 (Intake system is an impressive work of art and technology) -----Original Message----- From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of Warren Anderson Sent: Monday, April 13, 2009 5:57 PM To: 'George Riehl'; Chrysler300@xxxxxxxxxxxxxxx; Bob Jasinski Subject: Re: [Chrysler300]Self Adjusting valves The BMW Valvetronic technology may be what you saw referenced. Valvetronic does more than adjust valves. Honda and Ford index overhead cams. Valvetronic is at least two orders of magnitude above that basic technology. Honda and Ford are not the only makes with variable valve timing BTW. I think hydraulic lifters we have today are perfectly capable of keeping up with the engine speeds and cam profiles that classic 300's had where during their production years hydraulic lifter technology was not up to the task. But there is the mystique of the solid lifter cam - -- Warren Anderson Sedona,AZ Thanks George. Do solid lifters really provide an increase in performance? I just really wonder how much benefit there is compared to hydraulics. It sure is nice never having to adjust valves. There was a BMW commercial running just a few years back that touted the BMW had valves that "adjusted themselves" as if it was such an advanced feature. I chuckled at it and told my wife that our 300G had self adjusting valves too. Bob J _____ From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of George Riehl Sent: Sunday, April 12, 2009 4:29 PM To: 'Fern'; 'Jim Maiani'; Chrysler300@xxxxxxxxxxxxxxx; Bob Jasinski Subject: Re: [Chrysler300] Adjusting valves Hi Bob; The J and ram K also has soilid lifters, the non-ram is hyd, and the L has hyd. lifters. The '59, '60 & '61 were hyd. except for the 400 H.P. option. George ----- Original Message ----- From: Bob Jasinski To: 'Fern' ; 'Jim Maiani' ; Chrysler300@ <mailto:Chrysler300%40yahoogroups.com> yahoogroups.com Sent: Sunday, April 12, 2009 5:06 PM Subject: RE: [Chrysler300] Adjusting valves Well I guess you learn something new everyday. I didn't know the H had solid lifters, does the J, K & L have solid lifters too? Bob J _____ From: Chrysler300@ <mailto:Chrysler300%40yahoogroups.com> yahoogroups.com [mailto:Chrysler300@ <mailto:Chrysler300%40yahoogroups.com> yahoogroups.com] On Behalf Of Fern Sent: Sunday, April 12, 2009 10:34 AM To: 'Jim Maiani'; Chrysler300@ <mailto:Chrysler300%40yahoogroups.com> yahoogroups.com; Bob Jasinski Subject: Re: [Chrysler300] Adjusting valves The stock 413 engine in the 1962 300H HAS solid lifters. If I was doing it over again, I would have converted the one in my 300H conv to hydraulic lifters to eliminate that extra maintenance. Fern ----- Original Message ----- From: Bob Jasinski To: 'Jim Maiani' ; Chrysler300@ <mailto:Chrysler300%40yahoogroups.com> yahoogroups.com Sent: Sunday, April 12, 2009 10:51 AM Subject: RE: [Chrysler300] Adjusting valves Jim, You should have hydraulic lifters in your 413 that do not require adjustment, you won't find any adjusters on the rocker arms. Bob J _____ From: Chrysler300@ <mailto:Chrysler300%40yahoogroups.com> yahoogroups.com [mailto:Chrysler300@ <mailto:Chrysler300%40yahoogroups.com> yahoogroups.com] On Behalf Of Jim Maiani Sent: Friday, April 10, 2009 6:37 AM To: Chrysler300@ <mailto:Chrysler300%40yahoogroups.com> yahoogroups.com Subject: [Chrysler300] Adjusting valves Good morning group. I hope everyone is doing well. I'm not a mechanic, so I've hired a Mechanic to help me and he has a question that I KNOW someone can answer. Keep in mind this is the first Chrysler he's worked on. (Don't laugh....he's a Chevy guy)(I guess somebody has to drive those things). We've dug in and are replacing valve seals in my original 413 in my H. (The original seals are as hard as metal). He's concerned about adjusting the valves once we're done. He's explained how he does it in a Chevy, but says it's different here. I have an original service manual, but I can't find any procedure on how to adjust the valves. Now the question: Do the valves need to be adjusted? (I would think they do, listening to him). Can someone explain how to do this? Thanks as always for your help Jim Maiani Houghton Lake Michigan (where we still have snow piled up in places) 300-H From: Knutsen, Mark C Sent: Thursday, April 09, 2009 5:34 PM To: Chrysler300@ <mailto:Chrysler300%40yahoogroups.com> yahoogroups.com Subject: [Chrysler300] 1961 G - Dash Color & Paint Type Has anyone had their dash painted as part of a restoration? Any tips on color match & type of paint would be greatly appreciated. Happy holidays! Mark Knutsen 300 G (One more door and soon to be painted!) 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