Here they are....

8620 Tool Steel cam blank, copper plated and ready for rough and finish grinding then heat treat and Ion Nitride

The lifters weigh in at 53 Gr, thats 30 grams less than our ceramics, 55 Grams less than our conventional performance lifters and damn near 100 grams lighter than a stock TIV lifter!!!



Here is the bushing system that drops right into the case and makes it all happen..


Close up of the CNC bushing


The cam is being ground to a radical profile I designed tomorrow, the first test engine will be on the dyno in two weeks or less. Its a 200+HP, 14.5:1CR 2270 beast with 52mm IDA carbs and plenty of head development!

hydro?

how do ya get the bushing to stay pumped up?

Nope, nothing is hydro at all...

The bushing fits into the case and allows a specially modified Big Block Chevy lifter to be ran in the non modified Type 4 case.

The bushing incorporates a slot that the dowl in the lifter slips into, keeping the lifter from rotating in the bore...

cool

I need to change underwear.....


How many of these nifty upgrades are compatible with a stock type IV? are these the kinds of things that sorta require other modifications to see benefits?

So that is a roller lifter?

Yep..
What you can't see is the other two rollers inside the lifter that the contact roller rides against... Its a hydrostatic floating roller, the oil between the two smaller internal rollers is what it rides on...

as far as being compatible with stock components- Sure you could do this to a 100% otherwise stock engine, just don't plan on running stock FI!

I plan to build a 100% stock test engine and slap these rollers in, I have plotted 30% power gains, but won't know how accurate it is till I try it...

That boy is ALWAYS thinkin'.

Very cool, again.

Coolness. Once I get time someday, I'd love to build an engine kit, haven't decided what i'd want in terms of size, but definately with nickies... i've had my eye on some of those for a long while.

too bad i just put my motor back together. otherwise, i'd have listened to the show and gotten a deal on a kit. are there any decent upgrades that can be done without dropping the motor, aside from a Mallory/Hyfire(in my near future)?

Also, any more information i could find on the DTM for 914? haven't seen any specific stuff on the 914 version... i might be interested in one

Wow Jake thanks for sharing. That just looks awesome.
I hope it works as good as it looks

914 DTM info

Some pics


I am quite confident these rollers will work well, the concept has worked well for the Chevy boys...

30% on a stock engine?????

Hmmm I got me an idea. I off to go read the rule book a gain. D street Prepared HHMMMMMMM...

Absolutely!

With this arrangement I can open valves at a blistering rate compared to a flat tappet, literally twice as fast as with a stock arrangement! that means huge chamber filling at lower lift values... An autocrossers dream come true!

SO when are you sending a dozen of these to McMark in Napa? He might have another case splitting BBQ to celebrate. He told me about these last month, and the new tricks they can do with the valve movement. I assume you will develop these for the 2270 for now. Awesome. This, and the new cnc heads, have got to be the biggest TIV break-throughs in the enitre 21st century! Jake, you said on the radio show these would be revealed, and here they are. A honest man of his word....pretty rare in a jungle of grease monkeys!

Thanks!

There is much more on the horizon!

I don't plan on letting these babies out of my sight for 2 years or so-

have to give my complete engine customers the edge over everyone else for a while and also i have to really learn these babies before any customer gets them. I have 10 cam blanks made up and 14 sets of lifters, all different composition being made. I'll be wearing out dyno #2 as soon as it gets here and gets installed!

Doesn't look like it goes in a 6

Wonder what that would do in the 2.7? Could it hit 300hp?

You already have OHC, no need for a roller, unless you want to go back toa 4 cylinder and take a 150 pound diet pill real quick..

Looks like the Jesel Keyed lifters. Cool. Yeah Rollers are where its at. no more flat cams or lifters and you can really get radical with the ramp rates.

Shows you how much I know about these cars

Yep- The ramps are sick!!!

These rollers use a silicon nitride wheel, literally zero friction on any of the components...

Its going to be an adventure the first day the test engine fires up!...
designing regular flat tappet cams is absolutely no fun after this!! Whole new world!

Pardon my dumb question, but what is the difference in design between a flat tappet cam and a roller cam?

Same difference in daylight and dark- nothing is the same..

Here is a good comparison with Big Block Chevy cams.. The lobes are very similar for my arrangement.. Once we get the blanks finish ground.

Flat tappet on left, roller on the right..
These are very mild cams! They get WAY more aggressive!

Less friction as well...almost all the OEM (Ford, Chevy) pushrod motors have roller lifters for better gas mileage.........


those are bada$$ Jake...now to win the lotto in the next 2 years

Hey Jake,

What's with the diameter changed on the bushing? Are you milling out the case releifs and allowing some of the bushing to protrude?

Looks cool. Can't wait to see the results.

Matt

I have been dreaming of this for 10 years.......never had enough time or money to modify shit to do it. Way cool!

Next best thing to OHV and on a type 4, woohoo!!! type 1's look out.


shoot even my big o'crap V6 Ford Ranger has roller lifters.....

The case is only bored .004 max and thats just so the tooling ca ensure the bores are 100% true. They can drop right in to place with no machine work, BUt you are trusting the factory to be perfect and thats not cool. These lifters are critical to install, no mistake more than a ten thousandth is tolerated!

The bushings take the lifter bore from .943 to .842 so we can use a modified Chevy lifter thats cheaper, stronger, lighter and easier to get in Silicon Nitride..

Preparing to make a 100% swap to this technology for all my engines requires serious thought and planning- every aspect must be considered from cost to availability....

The best thing is this arrangement would only cost 300 bucks more than a set of ceramic flat tappets and a Web cam! More than likely I'll absorb the costs of the inclusions in my engines and just pass the power onto the customers.. Some people paid me for 155HP engines and have gotten 185HP for the same cost with the CNC heads, same goes for these rollers... It sometimes pays to be in line!

So the only way we get the roller lifters is to find em ourselves?

Or save some money and buy the whole engine..
Seriously, this is not do it yourselfer type work..

You have to basically re-engineer the entire valve train, have a cam blank made from scratch...

The tooling needed to ensure the bushings are inserted true and correctly has cost me over TEN THOUSAND bucks! If you do not install these correctly the cam will walk in the case and will eat thrust bearings like butter...

This is the kind of component that could destroy an entire engine in an heartbeat if not machined correctly, the same goes with the cam grind, we have had to have new master blanks made from scratch.

I plan on breaking a significant amount of parts creating the rules to make this effective. Thank me for not polluting the market with components that will break peoples engines!

Until I have an engine successfully runing these for 40K miles+ I won't think of using them in a customers engine.

Too bad you dont do 914 engines anymore...

Speaking of shoddy parts, where has Steve gone to?

At least you test things, some people let customers do the testing...


I dont buy crap for computers, I use what works--even if it costs 2x as much.

Seems like you do the same thing for these cars, and I tell each and every person 'you'll WISH your computer would die in order to get a new one before it actually keels over'

I redo EVERYTHING that comes through my door, including dumping all of the cheap chinese capacitors, kinda like valve seats on a t4.

What a great idea, that should help with reliablity. In the days that was the biggest

problem with running a roller cam, we did it but paid for it. The bushing was a

stroke of genius the cam is rarely the problem and being able to change the lifter

and bushing with no damage to the case is really cool. Nice job.

jake are you doing any thing with the "bee hive" valve springs?
i read about a year ago how you could let the valve "bounce" off the cam at high revs for a little more lift at higher rpm to extend the power curve with out any bad things happening. this is due to the controlled harmonic range of the spring.

i need to look this up again. i'm sure i didn't get it all out right.

Oh Mike, you havent either

I'll take the spring off of the AFM

Too bad that after Jake's magic, it's no longer a "stock" engine. Not legal for SP. Pretty much anything inside the engine besides balancing is verboten. But an XP motor??? Sky's the limit my friend. As the old saying goes... "Speed costs money, how fast can you afford to go? "

-Josh2

yeah, well I havent had a good enough break yet to listen to it.

Jake doesnt talk loud enough, The host needs to crank him up. I wanna hear jake, not some dude laughing .

Gomer

LOL

The host is kind of a geek. No offense intended, after all, I'm only more of a geek.

What I DON'T UNDERSTAND is why in the hell don't they have someone who understands audio production and web optimization run the audio through a decent software package before posting the MP3 to the web??? Ok, I admit, I'm on an obnoxious rant about equivalent ot Jake's rant on exhaust systems. But please. I download the show, load it into Adobe Audtion, and it a couple clicks end up with a nicely normalized listenable show that is about half as large a download. Why is the production lacking?

It wouldn't be hard for someone who really knew the technology to raise the audio quality of the show. Jakes engines are premium. The radio show content is premium. The production is lame.

Ok, rant over. Jake, THANK YOU for doing 4th dimension radio. HUGE. Just wish your production team was up to your level.

Go ahead, flame me now.

with that guy.

I am going to clean my stuff up with audacity. I simply cant hear jake. I guess its me, but when I hear jake well, the announcer sounds like he's right next to me and hes screaming.

It isn't rocket science, but id DOES REQUIRE A PROFESSIONAL. Jake's shows are worthy of professional production. Let's raise the freaking bar!

EDIT: Crap, I'm too fired up. I do this stuff for a living and I care passionately about quality. Probably shot off my mouth too much tonight. I better go have a rum and coke and mellow out.

hey rand, how you doin?

Hey Troy. Much better now, thanks. Rum and coke almost gone. LOL

i'm outta coke but not rum

Jake, thyatnks for the pics and info
I was wondering about the cam grind, what is the exact process? i know that they use a master cam that is larger than the real cam, and then use pantograph to grind the lobes then they go back and smooth out the finish. is that accurate?
another idea would be compund camshafts, why not have seperate lobes that would slide onto the camshaft, the lobes would be wire EDM'ed, smoothed out, and then slided onto a splined camshaft along with the journals, and retained there by some circlip or something? would it not be much more cost efficient?

Nick

Some of the radio shows have really bad audio issues. We are fighting each week with changing phone lines and the like. The host has pretty much every gadget you could imagine. The last show was certainly not as bad as a couple of the others and we continue to work on it..

I STILL BUILD 914 ENGINES!! If you would lisyten and read you'd see that I just don't do any more 914 specific RESEARCH work! That means that something like these rollers that benefit all of my engines will also be used in future engines to be fit into 914s, but things like the 914 Turbo kit have been terminated.... Its not really that big of a deal that I don't do any more 914 specific development because most everything that could be 914 specific we already created or had!

As for the way the cams are made- this started out as a 3.5" diameter chunk of solid billet steel- it has been CNC'd down to the sizes you see here, this is the strongest possible way thats cost effective to end up with a cam blank... Splining things requires a hobbing process and you should see how expensive that is!

The person that makes these cam blanks for me builds precision aerospace models and has many parts on the International Space Station and his parts helped us land on the Moon for the first time- he is about as serious as they come!

So the blank is CNC machined, but what about the lobe machining itself? is the process i talked about the real one or is there some other way?
Thanks
Nick

I clean them up before I listen to them. I can upload the cleaned up audio if you want to hear it or just tell you what I do. It's not hard. Just a compressor at 4to1 with a -19 threshold and a 8db boost. After that I just cut everything below 300hz since the only thing there is the guys breathing and laughing into the mic.

Much more pleasant to listen to afterwards.

Sounds to me like the host has too many gadgets and needs to learn how to process audio. Evidently his bag of tricks does not include quality compressor/limiters. Like I said, and like others say. A couple clicks in a good piece of software by someone who knows what f*** they're doing, and the audio quality is 100000% better plus the file is smaller. I'm not talking about theory here. I'm talking about what I do to the file after I download it so I can tolerate listening to it.

Sorry for ranting in public on this. That's really not like me. But this one is just ridiculous because it's so easy to fix by someone competent. It just bothers me because Jake's work quality is in a completely different league than this production quality. It's like serving a premium steak on a paper towel. I'll keep quiet now, if there's anything else to say it can be done offline. Sorry.

Back on topic: Thank you Jake for sharing. I love seeing and hearing about your innovation.