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 Post subject: BMW Valve Seats
PostPosted: Thu Mar 01, 2018 10:52 am 
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Joined: Wed Feb 09, 2011 11:18 pm
Posts: 27
Hello to the Forum, Is there anyone on the forum racing a BMW with either of these engines, 1.8/M42 or the 1.9/M44? I need some information on valve seats for these engines, DOHC 16 Valve, as to what material is being used, a source for these seats, part numbers, phone numbers, any contacts at all. Would prefer an alloy bronze type seat is possible? Valves will be stainless steel and the engine will be normally aspirated. Have found some available from KibbleWhite but the ID of the seats I have found from them does not match the BMW ID numbers. Nothing from the aftermarket BMW suppliers, VAC, Turner, MM, etc. Thanks for any information and insight Jerry


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 Post subject: Re: BMW Valve Seats
PostPosted: Thu Mar 01, 2018 12:23 pm 
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Joined: Thu Jan 22, 2004 3:31 pm
Posts: 647
Try SI valves in cali


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 Post subject: Re: BMW Valve Seats
PostPosted: Thu Mar 01, 2018 1:41 pm 
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Joined: Fri Aug 12, 2011 4:03 pm
Posts: 179
Location: Northeast PA
I have had GREAT results having my S14 valve seats made by Precision Products Performance in NC.
I have been using a seat material called Moldstar 90.
These guys make seats for all kinds of high end stuff, NASCAR, etc.

The first time we purchased my machinist gave them the dimensions he wanted, the sales rep Jerry Vess took the time to discuss the seat material and the machinists preferences, they came to agreement on dimensions and shortly we had valve seats.
Machinist and engine builder loved them, we took the engine apart this winter for a rod bearings and rings refresh and they are wearing great.

Precision Products Performance
191 Airport Road
Arden, NC 287048516
Phone: (828) 684-8569
Web: www.pppcenter.com

They will make seats out of all kinds of other materials (Steel, CuBe, etc, etc) but in talking to Jerry, he recommended the Moldtstar 90 and we have never looked back.
Nothing in this except a happy customer.
Cost was very fair.
HTH
jimmy p

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Jimmy Pettinato
88 BMW M3 - SPU #98


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 Post subject: Re: BMW Valve Seats
PostPosted: Thu Mar 01, 2018 3:34 pm 
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Joined: Tue Nov 03, 2009 6:16 pm
Posts: 295
Location: Kannapolis N.C.
In all of the BMW race engines that I have built, M44, M50, M52, M54, I never seen any wear of the factory seats that would require their replacement. Unless you are increasing the valve size beyond seat limits, there is probably no reason to take a chance replacing them. I prefer Ferrea one piece stainless valves over all others. All of the above engine models take the same valves.

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Sam Moore
SCCA competitor since 1983


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 Post subject: Re: BMW Valve Seats
PostPosted: Fri Mar 02, 2018 5:27 am 
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Joined: Sun Aug 18, 2002 6:52 pm
Posts: 2132
Location: Topeka, Kansas
What Sam said.

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jesseprathermotorsports.com


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 Post subject: Re: BMW Valve Seats
PostPosted: Fri Mar 02, 2018 6:17 am 
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Joined: Fri Oct 14, 2016 5:08 am
Posts: 34
Location: Dubuque, Iowa
Jimmy started to get me a little worked up about my new cam doing black smith work on my seats.

Then Sam and Jesse reminded me of what I always tell myself about OE BMW stuff: The OE materials, design, and quality is second to none - even when 20-30 years old.

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#38 EP BMW


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 Post subject: Re: BMW Valve Seats
PostPosted: Fri Mar 02, 2018 6:34 am 
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Joined: Fri Nov 13, 2009 9:12 pm
Posts: 1140
Location: SA, TX
tschreyer wrote:
OE BMW stuff: The OE materials, design, and quality is second to none - even when 20-30 years old.*

*Unless it's made of plastic, at which point it will have disintegrated and failed in spectacular fashion when 20-30 minutes old, and you'll replace it with an aftermarket upgrade.

Fixed for improved BMW ownership experience accuracy. :lol:

(I've never seen much of a reason to replace the original valve seats on a Honda either.)

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kevin

ruckracing honda's:
'15 & '10 Runoffs FP Champion
'10, '09, & '08 ARRC ITA/ITB Champion


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 Post subject: Re: BMW Valve Seats
PostPosted: Fri Mar 02, 2018 7:26 am 
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Joined: Wed Feb 09, 2011 11:18 pm
Posts: 27
THANKS A BUNCH GUYS!!!!!! THE M-50 suggestion opened all the doors and I found what I needed at a local shop, (FED MOGUL), stock. Will send them to North Carolina as templates for what I need. Mr. Moore, On the Ferrera valves, did you keep the 3 groove set-up for the keepers or go to the single set-up? Could not contact you via private e-mail thru the forum. THANKS AGAIN, Jerry


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 Post subject: Re: BMW Valve Seats
PostPosted: Fri Mar 02, 2018 8:26 am 
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Joined: Fri Oct 14, 2016 5:08 am
Posts: 34
Location: Dubuque, Iowa
kruck wrote:
tschreyer wrote:
OE BMW stuff: The OE materials, design, and quality is second to none - even when 20-30 years old.*

*Unless it's made of plastic, at which point it will have disintegrated and failed in spectacular fashion when 20-30 minutes old, and you'll replace it with an aftermarket upgrade.

Fixed for improved BMW ownership experience accuracy. :lol:

(I've never seen much of a reason to replace the original valve seats on a Honda either.)


Vinyl and leatherette included!

True dat.

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#38 EP BMW


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 Post subject: Re: BMW Valve Seats
PostPosted: Fri Mar 02, 2018 8:56 pm 
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Joined: Tue Nov 03, 2009 6:16 pm
Posts: 295
Location: Kannapolis N.C.
Stock, multi groove keepers are bullet proof. I also suggest Ferrea springs and retainers-never a problem in years and years of use and abuse. I have seen no change in valve lash with multi seasons of use with some pretty radical cam profiles.
Yes, BMW plastics and rubber sucks. I still love my E39 daily driver.

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Sam Moore
SCCA competitor since 1983


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