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-   -   New Remmele Type 4 Billet CNC Heads "Light Version" (https://www.germanlook.net/forums/showthread.php?t=11809)

70Turbobug March 17th 2015 12:02

New Remmele Type 4 Billet CNC Heads "Light Version"
 
Hello,
Edi Remmele asked me to post some data and pics of his new "light version" type 4 heads. More to the weird name later. We hope you like them!
The heads are completely made in house. They are completely billet. The heads are sold complete including: seats, 47x42 nimonic valves,guides,springs,retainers,keepers and cnc billet valve covers.
They are 1,8kg heavier than a stock cast type 4 head.Out of the box they flow 264cfm @25". Another important feature is there are holes to cool the head studs and between the cylinders. You can bolt on a type 1 exhaust system of your choice without modification. I would suggest a good flowing header i.e. WASP, A1,Lummus,etc.
There are 2 versions of this head depending on your application.The one described here is the larger version 2 with the 47x42 valves and larger ports. The other version 1, has a bit smaller ports and valves. The version 2 heads are not available below a 100mm bore. 103mm and 105mm are preferred.
Price for either version is 2.490.- Euros.

They are called "light version" because Remmele also has a billet CNC replacement for his large heads that are 2 piece heads. They are not available as a seperate set,only available with the purchase of an engine. They are bigger and flow well over 300 cfm@25". All the cnc billet heads are designed for street use! Type 1 CNC Billet Heads will follow soon, the CNC Programming is in process. The type 1 heads will be very similar to the type 4 "light version" heads.


http://imageshack.com/a/img910/1678/1uSyMm.jpg
http://http://imageshack.com/a/img540/8630/ImUjQw.jpg
http://imageshack.com/a/img661/8554/Kj3hV8.jpg
http://imageshack.com/a/img907/172/9RpUGr.jpg
http://imageshack.com/a/img661/5990/2aweRr.jpg
http://imageshack.com/a/img912/7802/tikZxZ.jpg
http://imageshack.com/a/img661/1209/JNqeee.jpg
http://imageshack.com/a/img661/1577/Te6hFO.jpg
http://imageshack.com/a/img540/3882/OpMud6.jpg
http://imageshack.com/a/img913/2678/KwpV4o.jpg
http://imageshack.com/a/img538/9779/EOUuef.jpg
http://imageshack.com/a/img537/2492/tQjdQe.jpg
http://imageshack.com/a/img633/4507/4Ht8Xd.jpg
http://imageshack.com/a/img910/1678/1uSyMm.jpg
http://imageshack.com/a/img538/466/qfQjom.jpg

SuperRSi March 19th 2015 00:16

Shots like this make me want to come back to aircooled T4s. Congratulations on having this beautiful set of heads.

70Turbobug March 19th 2015 06:44

Thanks Randy,but those are not mine! I will have the "big heads" soon,which are 2 piece heads. Here are my heads: These pics are a little older about 4 months,I donīt have any current pics. Some of the specs: 2 piece billet heads,cooling fins are 20mm to 40mm deep and enclose the entire head, rocker studs are 8mm thick 12.9 grade and are 7mm longer than stock,one piece bolt on rocker arm "bridge" which makes shimming much easier and has more stability,cooling fins enclose the intake port completely to add more cooling, cooling of the studs,Beryllium valve seats and guides, 52x42 nimonic valves or 48x42 nimonic valves (titanium also available),103mm or 105mm bore only. They share a cnc valve cover which has an o-ring seal and there is an O-ring seal between the heads at the rocker box. My engine is a 102x71 but my Deutz cylinders (not the engine in the pic) have the same outside diameter.

http://imageshack.com/a/img909/4295/atXrmj.jpg
http://imageshack.com/a/img537/3812/rsaLU5.jpg
http://imageshack.com/a/img673/3105/5ew0qR.jpg
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http://imageshack.com/a/img537/7384/PA34Nx.jpg
http://imageshack.com/a/img661/9953/a72DNT.jpg
http://imageshack.com/a/img673/9952/dh99Hc.jpg
http://imageshack.com/a/img538/7455/4hy9y8.jpg
http://imageshack.com/a/img910/2791/ANbJXr.jpg
http://imageshack.com/a/img905/5684/hotJhe.jpg

Why 2 piece? Better clamping pressure and cylinder to head seal for engines that have extreme cylinder pressures (for a future billet engine project),even better cooling than the light version and in case of damage,only 1 half of the head can be replaced and of course also,easier to produce than a 1 piece head with the same features.

SuperRSi March 19th 2015 14:47

His stuff is stunning...

JIMP March 19th 2015 15:42

Hello Mark

just a quick question, how the two heads seal to each other in the rocker area? as i see there is a common block for the rockers and not a split one they should be joined somehow

Friendly

Dimitrios

70Turbobug March 19th 2015 17:06

Hi Dimitrios. There is an O-ring seal between the heads at the rocker box. However,at the time of these pics it wasn't done yet.

Mark

JIMP March 20th 2015 02:33

OK thanks it's clear now, cheers and thanks

Friendly

Dimitrios

Flintstones March 20th 2015 06:14

Just sensational!
What HP are these heads expected to acheive?
Cheers
D

70Turbobug March 20th 2015 06:41

Hi Flintstones,
100hp/liter naturally aspirated could be done with these heads (both versions) and still remain reliable as far as temperatures are concerned.Currently there is a hillclimb racer with a Remmele 3 liter and the old cast heads with type 1 style exhaust ports. He is pumping out 362 bhp and 350NM torque,naturally aspirated fuel injected.Those heads have about the same flow and performance as the new one piece "light version". But again out of the box for street use,these heads are designed to give 250bhp reliably,which means daily driving. That is the main concern. Cast heads will cause problems eventually running an engine above 75hp/liter and the cost to repair them and the additional machining and port work,welding etc. makes them expensive and they are still inferior in performance and reliability. The 2 piece heads,are designed for extreme engines with high rpm and high cylinder pressure and above 2800ccm. Thanks for all the comments!

Cheers
Mark

effvee March 20th 2015 08:58

Good morning, I really don't see why Remmele just did not make the individual heads, completely individual. The sealing will be a weak link of the rockers. All seals work great when new, but if it's rubber, it will harden.

70Turbobug March 20th 2015 11:19

Hi Francelle,
The O-ring won't leak or harden,because it is silicone based. There is no movement in that area. They are 2 piece mainly to achieve more cooling. An individual head provides more equalized clamping pressure due to the offset type 4 studspacing. To achieve cooling like that,there is no other possibility because there is no other way to machine it.

Cheers,
Mark

effvee March 21st 2015 09:14

Quote:

Originally Posted by 70Turbobug (Post 89141)
Hi Francelle,
The O-ring won't leak or harden,because it is silicone based. There is no movement in that area. They are 2 piece mainly to achieve more cooling. An individual head provides more equalized clamping pressure due to the offset type 4 studspacing. To achieve cooling like that,there is no other possibility because there is no other way to machine it.

Cheers,
Mark

Hi, most valve covers gaskets are of some kind of silicone additive. I work daily on diesel engines that use a kind of silicone seal, and they are in the shop due to oil leaks. Yes, the seal is still pliable and rubbery but they still leak. I find it hard to understand why Remmele is taking this route. Will the seals have any type of groove on both receiving areas? No doubt the heads look like they will fit the bill,I don't want to be the harbinger of bad advice but, being in a horizontal position it's just a matter of time before the leaks show them selves.:o.

70Turbobug March 21st 2015 14:25

Yes,the heads have grooves machined on each side. We'll see how they hold up over time. ;)

SuperRSi March 22nd 2015 15:34

I can test a set next year...

70Turbobug April 1st 2015 08:30

It seems I will be using the light version heads instead of the split heads. The split heads have a 103mm wide chamber that can not be made any smaller since they can incorporate 52mm intake valve. I have a 102mm piston and cylinderbore I have to run the smaller head.
I do have another set of 105,5mm Mahle forged pistons and Deutz cylinders ready to go. But,I would have to sell the 102mm custom JE pistons and the matching Deutz cylinders. I think it would be hard to find a buyer for them.

SuperRSi April 2nd 2015 21:44

So what do you think the performance or flow difference is between the light Remmele and the Thorsten Piper heads? I ask this because I know I can get one of them...
I have 102 Nickies so need the light.

70Turbobug April 3rd 2015 05:23

I don't know what Thorsten's heads flow. They are very nicely done though. However,they are more expensive than the light heads from Remmele. The light heads have more cooling surface also. I personally do not like a D-shaped exhaust port. The reason for a D-Port is to eliminate reversion from the header during valve overlap. However, a round port has less friction and provides more flow. The light head's exhaust port is slightly smaller in diameter than the header. The wall around the port will block reversion. The light head flows 284cfm@25 ", which is good for 270bhp NA. I would guess Thorsten's heads are about the same. The biggest difference is the price. The light head costs 2490.00 Euros complete with nimonic valves,seats,guides, ready to run. Thorsten's heads cost IIRC 2990.00 bare without seats,valves,guides. Remmele does everything in house,which is what makes the difference in the price.
Wally set the benchmark for a reliable and powerful type 4 and will do so again. I'm convinced he will shatter 500 hp easily at the same boost level with less head and intake temperatures. I am planning to be on the road with mine in 2016, but have the car basically done this year. I don't think that I will be able to keep up with Wally,my gearbox that I have is too weak. But I will beat him in beer drinking :)

vdubzack April 14th 2015 13:29

Quote:

Originally Posted by 70Turbobug (Post 89171)
It seems I will be using the light version heads instead of the split heads. The split heads have a 103mm wide chamber that can not be made any smaller since they can incorporate 52mm intake valve. I have a 102mm piston and cylinderbore I have to run the smaller head.
I do have another set of 105,5mm Mahle forged pistons and Deutz cylinders ready to go. But,I would have to sell the 102mm custom JE pistons and the matching Deutz cylinders. I think it would be hard to find a buyer for them.

How much for the 102? what piston pin size.

70Turbobug April 14th 2015 17:56

The pin size is 24mm standard type 4 pin size diameter. Are you interested in the pistons and cylinders or just the pistons?

vdubzack April 29th 2015 00:12

both, cylinders and pistons.

70Turbobug May 2nd 2015 04:27

I've decided to keep the 102, since they are custom made for my engine.

SuperRSi July 21st 2015 19:37

Are you holding out on the new pictures? Or will you debut things as a complete engine?

70Turbobug July 22nd 2015 05:27

LOL, I havenīt gotten round to transfering the pics from my phone to my pc. I measured my Deutz cylinders and found that I need to have them turned down a hair. The cut out in the head is 115.08mm and my cylinders have a diameter at the top of 115.92mm. Thereīs always something... :). Once I have that done, Ican put the engine together. hopefully, I can get the cylinders done befroe I go on vacation on the 31 August.

SuperRSi July 23rd 2015 16:03

I am looking forward to your vacation!

WAIT! I have to wait until August 31 for treasures? Oh Man...

SuperRSi July 23rd 2015 16:04

Are you going aluminum or steel pushrods?

70Turbobug July 24th 2015 03:24

I will get your packages out with UPS before I leave for vacation. That's a type o above, my vacation starts July 31. I will be using Gene Berg chromo pushrods.

SuperRSi July 26th 2015 16:08

Do you think that a Manton tapered 7/16 to 3/8th pushrods would fit?

70Turbobug July 26th 2015 16:42

They will fit no problem!

SuperRSi July 17th 2016 01:15

Finally getting around to building my engine with the Remmele one piece heads. I will keep everyone posted...

70Turbobug July 17th 2016 10:11

Sounds great!


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