RevMaster 049 Heads

fuguboy · Samba Member Joined: December 14, 2004 Posts: 228

Heads are very nice and I have a few questions . Are chambers on 42x37.5 heads only for 94mm pistons or can 92mm thick wall pistons be used ? Can you matchport my manifolds ? Are CB650 springs and titanium retainers available as an option ? Can you flycut and cc heads for specific compression ? Thanks for any info . I am looking to buy new heads soon and these look very well done .

scorpion2 · Posted: Wed Jun 19, 2013 5:59 am Post subject:

Quokka42 , yes we can run any bore size from 85.5 to 94mm

modok, the seat and guides come from PEP, not sure what DRD port size is on the level 5. Give him a call 714.545.4100

fuguboy, yes the chambers can be cut for different size barells, Call DRD about matchporting and specific chambers. at the moment the CB springs and retainers are not available on these heads. Call DRD about you specific needs for custom stuff 714.545.4100

If anyone would like to get on our mailing list for Revmaster please email me [email protected]

I will be sending out information about what we are doin with these heads.

AlteWagen · Troll Joined: February 23, 2007 Posts: 8692 Location: PNW

Mike sent out this info today, thought I would post it for those not on the mailing list.

Quokka42 · Posted: Tue Jul 30, 2013 2:36 am Post subject:

Some pics would be great. I'm liking the look of these even more, but being in Oz they might be a bit hard to get hold of. I had a look at the Simms page, but they don't seem to list them, and DRD only seem to have the CNC versions.
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*did* · Posted: Tue Jul 30, 2013 5:54 pm Post subject:

catbox · Posted: Tue Jul 30, 2013 6:18 pm Post subject:

I only have the Revmaster long 94's for my engine but these look awesome!
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scorpion2 · Posted: Wed Jul 31, 2013 12:21 pm Post subject:

I will shoot some pics either today or tomorrow for you guys, so please check back on here.

Also if you would like to added to our email list let me know

[email protected]

Matthew · Posted: Wed Jul 31, 2013 12:24 pm Post subject:

It would be cool if we had some specs on that AJ motor. I'm sure it has an AJ cam, but a rough idea on CR and cam timing would be helpful.
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mark tucker · Posted: Wed Jul 31, 2013 9:26 pm Post subject:

my 11 yearold mofoco's flowed 134 in stock form when I got them, turd in the intake port, crap for valve job,(not realy crap but not a performance vj.)stock type chambers,shrouded valves, 85.5 bore. I know roy has updated his castings so there probably a lot better now. so from what I see hear I think the restriction is the inlet size/shape direction for the most part, there not very far appart on the cfm& I dont see the big booger/turd in the port on these heads and probably a much better chamber that will flow more. they do look like a nice head.are they china heads?? or made in the usa like roys heads?? Ive had 2 sets of china heads, wasent real impressed with them but saw no real problems other than they were smaller than the vw head in the valve cover rail area so the covers had to be just right to seal. I think they were the 043 castings from china (scat prostreet) they did not have any booger/turd in the port around the guide. I have around 80000 miles on my mofoco's there now wedgeported&42x37.5 valves,& reshaped chambers, still the orignal guides, they work great. I hope these revmasters turn out to be just as good...and made in the usa.(I hope)

AlteWagen · Troll Joined: February 23, 2007 Posts: 8692 Location: PNW

china

scorpion2 · Posted: Thu Aug 01, 2013 10:43 pm Post subject:

OK here are some pics I shot today, if you guys have any other questions I will check back on here from time to time.

Yes the heads are made in China, and I know there is a lot of stuff comming out of there that is not too great. We recently met with the manufacture and I asked why there is stuff that is not of quality being produced over there. In a nut shell they explained it to me like this. Many people ship the chinese manufacture a part and say copy this, the factory then has to try and reverse engineer it and make molds. then the cost of the molds is broken down, you want wood molds (very cheap) or permanet molds (very expensive) next they say what material and can you make the heads for 40 bucks. The 049 heads was produced entirely different. Revmaster entered into China over 30 years ago along side Mcdonald Douglas to manufacture aircraft parts as well as auto Hi performance connecting rods for Manely etc etc. The aircraft industry manufactures off drawings and material spec sheets which is how the 049 heads are made. Between Joe Horvath and Ralph Maloof there is over 100 years of experience in manufacturing aircraft engine components, both of them are experts in metalurgy and I have personally witnessed them specing alloy makeups for products. I was pretty taken back by the process. Once a sample of a product is produced it is sent out for testing to prove the specific weights of materials are present in the part. Ask anyone who has machined on the 049 head, it machines different than any of its competitors. It is only my personal perspective but I believe that the Chinese, Brazilians and production personel in Mexico are all capable of making excelent product if given the right direction, funding and equipment. I do not disagree with anyone about some of the products comming out of China, I just think ours is entirely different.

Also wanted to say the other day a fellow racer friend showed me some mofoco heads he had just picked up, those heads are nice. Very impressive

Image may have been reduced in size. Click image to view fullscreen.

This head is a 4035D with a 94mm bore and 53cc chamber, non ported

AlteWagen · Troll Joined: February 23, 2007 Posts: 8692 Location: PNW

Order coming soon!

fivelugshortaxle · Posted: Fri Aug 02, 2013 12:07 am Post subject:

Waiting on my Mofoco 050's. 42 x 37.5
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ralf · Posted: Fri Aug 02, 2013 3:35 am Post subject:

scorpion2

i hear ya on the china parts..

even if alot here always say "china = crap"

its cuz the seller or whoever contracted a chinese plant is trying to save a dolla LOL usually theyre on that side of the ocean too LOL

and they blame china LOL

we recently sent a cpu that no longer is available..
and they did one.. if not better (including wat we requested)
except we had to get 250pc for the first order LOL

if these fail ...its not like ud be stock on the side of the road..
you either crash or give up the ghost LOL

they havnt failed...

on topic- i like the heads! would love to try these on some projects
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scorpion2 · Posted: Sun Aug 18, 2013 9:42 pm Post subject:

Hey thanks everyone for ordering heads and keeping me busy. I havent had time to get on here. When the term blended ports is used it basically means the area under the seats is clean up. I do this to all the heads that are ordered complete and on the bare heads I leave that area alone. Thanks

AlteWagen · Troll Joined: February 23, 2007 Posts: 8692 Location: PNW

AlteWagen · Troll Joined: February 23, 2007 Posts: 8692 Location: PNW

Mike, I am putting together a reference sheet for current production heads and I was wondering what the volume for an unmodified as cast port is.

Thanks
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mark tucker · Posted: Fri Oct 11, 2013 7:58 am Post subject:

it's a shame they didnt "D" port the exhaust,add more material under the ex seat&heart the chambers& cast to where little to no porting work is needed. it can be done.

saw2 · Posted: Wed Nov 20, 2013 9:42 am Post subject:

Any other experiences or input from anyone on running the Revmaster 049 heads?

57baja · Posted: Wed Nov 20, 2013 2:18 pm Post subject:

Yes. They are using the same casting from the same foundry, from what I've been told. AA Performance Products has them, too. Who knows who else will be using them in the future, as the people who made them were at SEMA this year showing them. It looks like EMPI has ground off the "049" symbol, whereas the AA version still has remnants of the ring in the casting.

On the one hand, it's a shame for Revmaster if they developed a product and the people who manufacture it for them are now selling it to other distributors. On the other hand, it does make the product available to more consumers through the various dealer networks out there, which will likely drive the price down for the end user.

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