New TIV heads, check this poll out Options

[Jake Raby]

Hey guys....I have made some big contacts in the world of TIV cylinder heads. Please go see this post and let me know what you think


http://www.shoptalkforums.com/viewtopic.ph...00ade61ecad10d1

With a tad bit ofmods and some exhaust system mods these will work in a teener and free up atleast 75 bolt on HP for many engines.

also look at this thread for info on some new parts in the works.
http://www.shoptalkforums.com/viewtopic.ph...00ade61ecad10d1

[McMark]

Looks like interesting stuff, but my only concern for teeners is getting exhaust manifolds. With stock heads we already have all the exhaust we need. With Type I exhaust ports, 914s become a major minority.

[Hawktel]

I'd drop 1500 on heads if I was reasonably sure they get me 75 horse. I'd sure be asking "wheres the catch" though.

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[Jake Raby]

Yes, exhaust would have to be redone....For a teener these would only be good for performance vehicles without a heater system. BUT with enough desire I'm sure a header could be made with heat.

Read the post closely. 75HP would be possible on engines tuned to work with this head design.

[Brad Roberts]

Tough call man. I think the 1500$ price it right. I know how much work goes into the heads.

I just dont really see bug guy's or 914 guy's popping for a set the minute they are released.

Its funny.. the STF people complain about rebuilding used heads (buy new ones).


B

[Mark Henry]

How would the exhaust clear the fan housing? Or would you also have to do an upright fan conversion?

Won't clear the stock oil cooler location either.

75hp gain is a large claim.

[JmuRiz]

I'd be game for some heads in the 800+ range...not sure about 1500, unless it really did put out that much HP. Also, how many mods are we talking about...I understand the heater issue, but like Mark said...would we have to cut up and fab all kinds of other parts. That could add to the $$$. Thanks for researching though, free flow heads would really open these puppies up in higher RPMs!

[PatW]

Would this increase/decrease the cost your engines?. Is it too early to tell?.

1500$ max is what I would pay

[Jake Raby]

75HP claim is not that big when you think anbout the facts. TI engines with heads near these are making 200+ HP from small 2200cc engines that started out as 1600s.

I have done the modeling and have seen that 55-75HP is not that big of a deal with the right cam.

[mike_the_man]

I'd be interested. I'm thinking I'll probably be doing a rebuild in a year or so, and there is nowhere around here to get headwork done anyway. Might as well just get some new ones. The only thinkg I'd be concerned about is exhaust. It would be nice to keep heat, but I don't want to spend big $$$ to do it. I think I'd be willing to pay around $1200, as long as no other major modifications are required. Would these work with fuel injection, or would these be carb only? I would prefer to stick with my FI. Even an extra 30hp with a mild cam and fuel injection would be great. I think that would be worth around $1200 to me.

[TheCabinetmaker]

Even an extra 30hp with a mild cam and fuel injection would be great. I think that would be worth around $1200 to me.

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[john rogers]

The question I'd have is: are they legal for SCCA, PCA and vintage racing? I was considering a set of either Pauter or Autocraft heads a couple of yesra ago and found they make the 914 not legal since somewhere it says no aftermarket heads. If they are not considered "aftermarket" then I guess they are great!

[cha914]

Jake,

sounds interesting, but just from looking at things, this would be an upright engine, with a remote oil cooler and no heat- initally at least. Which, the only guys who I see doing that are racers, and I doubt these heads would be allowed in most race orgs without going into the GT classes, and if you are going to spend that kinda money then might as well put a 6 in it...

But I do think is perfect for the bug/bus crowd who want to swap to TIV power...

I think the 800-1200 price range would be nice, but I expect the 1200-1500 price range to be about right for what you are offering.

I suspect you might get Brad to stuff a few into SoCal guys who want to stay with a /4, and maybe a few others like myself that like to do something different, but I think most will opt for a six before going through the trouble these would be in a 914...

I hope you are able to go forward with them, I will want a pair for my T4 dune buggy project in the distant future...

Tony

[Mueller]

John,

In PCA they would be legal, as long as it's not a stock or production class, at least in our region.

Right now for true bolt on heads ( and brand new ) I'd be willing to dish out those kind of frog skins for an additional 75hp !!!!!!

Also, the key factor is can we use our stock pistons or not, if I have to get a new set of $400+ JE pistons and get my cylinder re-honed, I'd be a little more hesitant.

The exhaust is a no-brainer, having to use headers is not big deal, fab'ing something for heat should not be a big deal either.

[Jake Raby]

Forget the stock FI, I will neverdesign anything to work with it!

Heater boxes are not an issue, and I can make stock cooling tin work.

Its just a matter of demand.

Keep in mind this would put my big engines above 2500cc to over 285-300HP. Most guys don't care about heat with 300HP.

[mike_the_man]

I'm not too surpirsed that you wouldn't design them for stock FI, but hey, never hurts to ask. I think I'd still be willing to pay around $1200 for heads, if I could be looking at around 150hp with carbs and a cam. As long as it would be streetable, and fairly durable. Unfortunately, I know next to nothing about carbs, but I guess I could learn.

Let us know Jake, this all sounds very interesting.

[Dave_Darling]

This is never going to be a question of "bolt these on and get an instant 75 HP!" Reality will be more like, "Design the motor around these heads and it will be 75 HP stronger than the stocker!" Or perhaps, "75 more than this really huge 180 HP motor that uses modified stock heads".

So this will be about the fifth "Type IV" head that looks like a modified Type I head. Utterly useless to most of us 914 folks, just like the Pauter heads... (IMG:style_emoticons/default/sad.gif) Something really spiffy that has Type IV exhaust ports would be more useful to the majority of us. Easily worth $800-$1K per pair, quite possibly more.

--DD

[Andyrew]

If you could make a package (ya I know you want to do the whole engine's) you could get some good buyers if you had a cam/head/muffler/whatever else package (if you hate fi, then add carbs) for under 3000, under 2500 would be great.. that adds some serious hp to the engine (75 more hp is a nice thought...). This could allow for great hp with low(er) cost and keep us racers/autocrossers in a slightly modifyed class with no increase in engine size..

Im just talking for the buyers view, I know this would probably be near impossible for you..

I love the idea of high hp heads though!!!

Keep up the great work!! (IMG:style_emoticons/default/clap56.gif)

Andrew

[Jake Raby]

making a better exhaust port that exits like a stock TIV is almost impossible for any decent amount of money...

Right now my huge thing is with upright conversions. I do alot of TIV engines for 914s, but not as much as I do for beetle conversions.

For gys that are keeping stock heads, I'll still have my combos.

[anthony]

A heater is important for me. The car is no fun if I'm freezing my ass off or if I can only drive it when it's warm. Some day I'll put big horsepower in my 914 and heat will be mandatory.