KR> DRD heads

[Mark Langford]

Owen wrote:

 > Which did you go with?  I didn?t see a "OEM 43? among them,

They call them "OEM 043 clone", SKU OEMT1HEAD, for $420/pair.  They are 
stock valve size (to reduce cracking between seats), and can be bored to 
whatever cylinder size or depth you want for free.  I will put stainless 
valves in them also, of course. See link below.

http://www.drdracingheads.com/xcart/OEM-Style-Dual-port-type-1-heads-12mm-spark-plug.html


Mark Langford
ML at N56ML.com
http://www.n56ml.com

KR> DRD heads

[svd]

Hi Mark,

DRD looks like they have a lot of interesting type 1 heads. 
http://www.drdracingheads.com/xcart/home.php 


http://www.drdracingheads.com/xcart/OEM-Big-Valved-NON-Ported-Type-1-heads.html 


Which did you go with?  I didn?t see a "OEM 43? among them, but I was probably 
looking in the wrong place.  Worse, I couldn?t find much in the way of pictures 
of the heads.  Please point us in the right direction.

Cheers,
Owen


> On Jun 24, 2016, at 9:00 AM, krnet-request at list.krnet.org wrote:
> 
> Date: Thu, 23 Jun 2016 17:22:17 -0500
> From: Mark Langford mailto:ml at n56ml.com>>
> To: KRnet mailto:krnet at list.krnet.org>>
> Subject: Re: KR> VW heads
> Message-ID: <67fc476f-1b2a-f46b-5abe-78cd21833152 at n56ml.com 
> >
> Content-Type: text/plain; charset="windows-1252"; Format="flowed"
> 
> I called Revmaster Tuesday, but got no answer.  Today was better, and I 
> talked to a guy about their heads, hoping to find some with nice air 
> passages as well as "advanced" valve seats.  The photo on Revmaster 
> Aviation's website only shows the chamber side, and their website in 
> general had lots of issues, such as an inop price list.  He told me to 
> go look at the photos on the automotive website, since they were the 
> same RM-049 heads for either application.  After seeing that photo, I 
> was not impressed that the passages are much better than what has become 
> normal for VW head castings, although the castings are clearly not stock 
> VW derived. He also said their seat material was something like "latest 
> technology that others are also using, not just cast iron", for what 
> that's worth.
> 
> I've been conversing with DRD Racing for a few days, and their 
> Chinese-derived heads do indeed have large cooling passages.  Given the 
> overall quality of these castings, I'm going to ASSume that they 
> wouldn't install crappy seats in an otherwise decent looking head, so 
> I've ordered a pair, especially after seeing a photo that DRD provided 
> today.  I'll update y'all when I have a pair on the work bench and can 
> get better photos, but the best I can do for a comparison at this point 
> is the two photos below (or enclosed, I hope) of a Revmaster RM-049 and 
> the DRD "OEM 43" head passages.  Cooling trumps seat life, at this point 
> in my life.  More after I do some testing on these heads. This may prove 
> to be a dumb idea, but somebody's got to try them out...
> 
> 
> Mark Langford
> ML at N56ML.com 
> http://www.n56ml.com 
> 
> -- next part --