YOU HAVE GOT TO SEE THESE HEADS!!!, OUTRAGEOUS! 3500.00 READY TO RUN Options

[jwalters]

(IMG:style_emoticons/default/wink.gif) Hey, here is a thought--everybody else is doin a group buy---lets see, if we get at least 50 dudes to do this, and we get the price down to a set of nickies.............................................. (IMG:style_emoticons/default/beer.gif)

[Mueller]

I'd rather wait for Jakes parts....these look fine and dandy, but if you have problems with them good luck.

I'd ask Steve if he has actually used these yet or not...if not I'd stay clear from them, I'd hate to be the US guinea pig on them (IMG:style_emoticons/default/smash.gif)

[Aaron Cox]

what exhaust would you run ?

[Mueller]

what exhaust would you run ?

the one that you custom made (IMG:style_emoticons/default/smash.gif) (IMG:style_emoticons/default/smile.gif)

if Jakes heads have the same type of exhaust ports then I'd venture to say that Chris will be offering an exhaust system....

don't know if you can run the 914 fan housing or not, you might be able to modify it so the exhaust does not run into it.....

[Randal]

That web address doesn't work for me either.

Is the correct address, "www.typeivparts.com?"

[jwalters]

That web address doesn't work for me either.

Is the correct address, "www.typeivparts.com?"

(IMG:style_emoticons/default/biggrin.gif) yea, I got screwed up----http://www.type4parts.com/

(IMG:style_emoticons/default/beer.gif)

[Aaron Cox]

heres a link to the heads
http://www.type4parts.com/cat_type_4_heads.cfm

[Mark Henry]

Sweeeeet! (IMG:style_emoticons/default/wub.gif)

They look well made...in a bug they would use an off the shelf T1 exhaust...looks about 1-7/8 or 2'.

A 914 would need a DTM and a custom exhaust.

Mmmmm...7mm valve stems, dual plug, lots of fins and silicon aluminum bronze valve seats.

Very trick! (IMG:style_emoticons/default/cool.gif)

I'd love a set....but if the wife knew the price of my Nickies and ceramic lifters I'd be dead meat.

Best not to tempt fate.

[pete-greggers]

dude..... a v8 in a porsche??
Hmmm

[TheCabinetmaker]

Eat shittt? dude, ya gotta do better than that!!!!

[Brett W]

Too bad they couldn't come up with a better head in all that time.

They will have cooling problems. Look at the fin coverage on the stock heads.
They should have done it as a crossflow head. End ports don't flow as well.
They should have used a more modern chamber design so they didn't have to have dual plugs.
Polished intake ports are a waste.
They won't fit in a 914. Engine will be too wide. Those heads are too tall.

Bet you could have some fun with boost though.

[Mueller]

type I exhaust ports cannot be that bad, they kick our type iv's @ss when it comes to hp for turbo and hot rod motors...don't know how long they last, but they cannot be that bad (IMG:style_emoticons/default/smile.gif)

[Brett W]

Anything is better than what we have, but it is far from the optimal way to do it.

[Mueller]

crossflow would be nice, but we have those darn push rods in the way (IMG:style_emoticons/default/smile.gif)

[Brett W]

HHHHMMMMM, chevy, ford buick, olds, Chrysler, etc worked around it.

[Mark Henry]

Too bad they couldn't come up with a better head in all that time.

They will have cooling problems. Look at the fin coverage on the stock heads.
They should have done it as a crossflow head.  End ports don't flow as well.
They should have used a more modern chamber design so they didn't have to have dual plugs.
Polished intake ports are a waste.
They won't fit in a 914.  Engine will be too wide.  Those heads are too tall.

Bet you could have some fun with boost though.

Fins or lack of them is always a problem with aftermarket heads. This head tries to overcome this with more big fins and with the better T1 exhaust ports.

Polished intake ports are a waste.

You are stuck on stock T4 casting thinking...polishing T4 intakes are a waste only because you can not get the exhaust gasses out fast enough. With those exhaust ports you would need the extensive intake porting just to make it flow right.

As far as chamber and overall design goes they are trying to keep it within the stock design limits. The overhead cam and split port type head designs I've seen so far are a total nightmare.

If you think you could do better step up to the plate....but I think Jake is the man for that job.

[IronHillRestorations]

They should have used a more modern chamber design so they didn't have to have dual plugs.

Once you get past a certain compression ratio you have to use twin plugs.

Geez, if you were going to build an engine that cost that much, I'd just get one of those Popolous four cylinders. The ones that are basically a 911 flat six with two cylinders lopped off.

[Brett W]

Polished intakes suck. They are so smooth that they allow fuel droplets to fall out of suspension and stick to the sides of the ports. Thus causing poor efficency. Boundary layer is much better on a port wall with texture to it. I ususally finish my ports with a 40-60 grit cartridge roll and I use different textures at different areas of the port. Polished ports make customers happy. The stock intake ports are not a bad design, the exhaust ports are awful though. (we already know that)

If I had the money or time I might look into it. I have so much on my plate right now that I can't even think about. I have thought about it before but I don't think I can come up with one for a reasonable price.

Once you get past a certain compression ratio you have to use twin plugs.

I know Porsche says that and that is the case with the crappy combustion chamber design of the 911 engine, but look at the new Vette engine. 11 degree wedge head, pushrod engine, 10.9:1 compression with a 4 inch bore. You could easily raise that to 11.5 with proper piston design good knock control. With a compact wedge design or classic shallow pent roof combustion chamber you get a much more efficent use of the combustion space allowing for faster burn and much less timing requirements.

Could you still use the Four cylinder motor, and call it a Porsche engine?

[slugmika]

I believe that mr. Remmele knows his stuff.

[john rogers]

Those are similar to the Autopower and Pauter heads. They work well on low RPM hi torque motors or drag motors that are pulled apart after every race weekend. If you were to want to race them, in most events they would be illegal. Sure are nice though!!!