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> Hybrid 2.0 / 914 heads (pics), 50% Porsche- 50% Jake and Len!
Jake Raby
post Jan 12 2005, 03:57 PM
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(IMG:http://www.aircooledtechnology.com/hybrid_2l_914_heads/slides/Picture%20061.jpg)

An excerpt from my forum

These puppies are amazing! Look at that odd valve train and weird coatings on the valves..

If you look close you'll even see valve stem seals, something thats unheard of today but made possible by the friction reduction properties of the DLC coatings that you can see here. http://www.aircooledtechnology.com/coatings_2.htm

Its being assembled starting tomorrow and will be dynoed in the next two weeks....

Look here for more detailed pics
http://www.aircooledtechnology.com/r_d_hybrid.htm


These puppies are the next level of TIV development, all the best ideas from all the basic TIV head designs ever produced all compiled into one unit....


These heads are KICK ASS! Len out did himself on the work! Lookin to put this 2316 in the "200 club" on pump gas as a daily driver.

"Excellence through Research"
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Mueller
post Jan 12 2005, 04:00 PM
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picture 070 looks a little scary, not a good "promo" shot (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)
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r_towle
post Jan 12 2005, 04:09 PM
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I really like the exhaust ports, especially the extra room for the headers and lots of mating material.

Well done.
How do they flow?

rich
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Jake Raby
post Jan 12 2005, 04:26 PM
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Whats wrong with pic #70??

The port is shaped that way for a reason..

If you are talking about the valve guide scratch, its very small the camera just blows it way up..

The first time you do anything like this is a total learning curve anyway- Who gives a damn what they look like!

There is a TON of labor in these- its a wonder they don't have more scratches than that! The valve seats were swapped 3 times trying to find the perfect profile, guides were swapped 2-3 times to change profiles for flow impact comparison too...
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Mueller
post Jan 12 2005, 04:33 PM
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QUOTE
If you are talking about the valve guide scratch, its very small the camera just blows it way up
......just teasing you.....yea, I was talking about the valve guide (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)

hurry up and dyno those puppies !!!!!

is anyone brave enough to ask about a price (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)
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Jake Raby
post Jan 12 2005, 04:55 PM
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Detailed prices soon........

The prices are not that bad and may get better if we do more of them and the welding processes can be streamlined for more than one set of heads at a time.

These particular heads were not cheap though.... The DLC coating alone was ELEVEN HUNDRED bucks!
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Mark Henry
post Jan 12 2005, 06:23 PM
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I'm touching myself (IMG:http://www.914world.com/bbs2/html/emoticons/drooley.gif)




Mmmmm.......gearhead porn
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EdwardBlume
post Jan 12 2005, 06:26 PM
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Dam!!! Can't wait to see the dyno results!
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Jake Raby
post Jan 12 2005, 06:41 PM
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Neither can I!

The other test for this puppy is a special Top piston ring and NO second ring at all!
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Brett W
post Jan 12 2005, 07:08 PM
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Nice work Len and Jake. Too bad the plug is pointed in the wrong direction. But that is something that would require much more work.

I assume that you are using a certian ring from a certian company that sells a lot of Hype? doubt you will see much as far as gains on a street motor. It may even burn too much oil for the street. Most of the people I know using 2 ring pistons are running vaccum systems and not a top ring from the company that I am thinking about. Even the pros that run the rings from this company don't even run the same type of rings that this company sells to the average joe.
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ewdysar
post Jan 12 2005, 07:13 PM
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I understand the need to develop a solution that does not require hard to aquire parts. But some of the work described is to bring the head to "2.0" specs. Would 2.0 heads be appropriate cores to start with, or do these heads have advantages over 2.0 cores?

Eric
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Jake Raby
post Jan 12 2005, 07:15 PM
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Brett,
The rings are something we are trying with Nickies for the first time.

We are trying it on our own, no hype from a salesperson..

As for the plug being pointed the wrong direction: That means Porsche did it wrong too, but its still good enough for us to see an 8-10% power gain as a general rule on the dyno across the board, especially down low.

There is no such thing as a perfect engine, trying to create one is the first mustake that can be made.

BTW- The heads that WERE on this engine were of 2.0 914 flavor.

The flow numbers on these heads surpass those of the most worked over 2.0 heads on the exhaust side and the intakes were worked to the "Magical numbers"...
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Brett W
post Jan 12 2005, 07:24 PM
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QUOTE
The rings are something we are trying with Nickies for the first time.

We are trying it on our own, no hype from a salesperson..

As for the plug being pointed the wrong direction: That means Porsche did it wrong too, but its still good enough for us to see an 8-10% power gain as a general ruleon the dyno across the board, especially down low.

There is no such thing as a perfect engine, trying to create one is the first mustake that can be made.


OK, are you going to run them with some gas ports?

Yes Porsche did point it in the wrong direction. If you want the absolute pinnacle in 2 valve pushrod engine developement look at the LS1 and some the NASCAR boys. I know you have friends in that business. The improvement is over the stock 1.7 and 1.8 plug location and in reference to that the 2.0 plug angle is a fabulous improvement.

The perfect engine cannot exist. All engines are a compromise. You have to give up something for something else. ON that we will always agree.

Keep up the hard work. Wish I had your budget to work with. (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)
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Mueller
post Jan 12 2005, 07:29 PM
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QUOTE
Nice work Len and Jake. Too bad the plug is pointed in the wrong direction. But that is something that would require much more work.


you could index the threads so that the opening of the electrode is not facing the intake charge to help prevent it from getting wet...not much of a shield, but it might help? (IMG:http://www.914world.com/bbs2/html/emoticons/confused24.gif)
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Brett W
post Jan 12 2005, 07:33 PM
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Jake,
Can you get the AMC heads bare, no seats or guides?
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Mark Henry
post Jan 12 2005, 07:42 PM
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Don't think so...

Removing the guides and seats is easy (IMG:http://www.914world.com/bbs2/html/emoticons/confused24.gif)
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Jake Raby
post Jan 12 2005, 07:44 PM
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Nope...

I have 3 gallon buckets full of their marginal valves and springs and other crap..
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Brett W
post Jan 12 2005, 07:57 PM
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No sense in paying for labor and parts for un-necessary items, especially if I have to take them out anyways.
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