Ported 3 stud head advice
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Ported 3 stud head advice
What do you think about the port on these heads?
What do you think they are worth?
One plug is heliocoiled.
https://sites.google.com/site/stevehend ... s/vw_stuff
What do you think they are worth?
One plug is heliocoiled.
https://sites.google.com/site/stevehend ... s/vw_stuff
- Piledriver
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Re: Ported 3 stud head advice
The biggest cost danger on those are cracks, esp ~almost impossible to fix networks of cracks, usually in exhaust port but sometimes not visible until you pull the seats.
HAM still does T4 heads if the casting is in decent shape, except for bus heads, detonation/water damage, or GEX ...
He has a detailed list of criteria on his website.
HAM still does T4 heads if the casting is in decent shape, except for bus heads, detonation/water damage, or GEX ...
He has a detailed list of criteria on his website.
Addendum to Newtons first law:
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
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- Joined: Fri May 27, 2011 9:15 am
Re: Ported 3 stud head advice
Emailed Ham he only dose new heads now.
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- Posts: 45
- Joined: Fri May 27, 2011 9:15 am
Re: Ported 3 stud head advice
Emailed Ham he only dose new heads now.
- Piledriver
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Re: Ported 3 stud head advice
Bizarre as his website says otherwise, much to my surprise.
That's the only reason i suggested it.
I'll send him an email...
That's the only reason i suggested it.
I'll send him an email...
Addendum to Newtons first law:
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
- Clatter
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- Joined: Sun Apr 28, 2002 1:01 am
Re: Ported 3 stud head advice
Until you get those blasted clean clean 100% consider those heads junk.
They might not even be cores if flycut too much, or have cracks hidden in the exhaust port floor.
Cracks of that type can't even be photographed, because they hide so well.
Tried to do that once, cleaned the heads perfectly, and then heated with a torch to get the crack to weep oil and show.. Cracks hide themselves very well.
I got a set of GEX 914 2.0 heads once for free. They were worth exactly what I paid for them!
They might not even be cores if flycut too much, or have cracks hidden in the exhaust port floor.
Cracks of that type can't even be photographed, because they hide so well.
Tried to do that once, cleaned the heads perfectly, and then heated with a torch to get the crack to weep oil and show.. Cracks hide themselves very well.
I got a set of GEX 914 2.0 heads once for free. They were worth exactly what I paid for them!
Speedier than a Fasting Bullet!
Beginners' how-to Type 4 build thread ---> http://shoptalkforums.com/viewtopic.php?f=1&t=145853
Beginners' how-to Type 4 build thread ---> http://shoptalkforums.com/viewtopic.php?f=1&t=145853
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Re: Ported 3 stud head advice
Fat performance fixed my 3 stud heads. They were cracked in all the usual places.
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- Joined: Sun May 25, 2008 7:27 am
Re: Ported 3 stud head advice
Hi!
If you cant find any useable 3 stud heads maybe you can try these: https://aapistons.com/collections/cylin ... round-port
Saw these while looking through the 914World forum.
If you cant find any useable 3 stud heads maybe you can try these: https://aapistons.com/collections/cylin ... round-port
Saw these while looking through the 914World forum.
- Piledriver
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Re: Ported 3 stud head advice
I have not heard anything on those QSC castings, but if you own a machine shop or "have a friend" who does they might be a good start. They are bare castings, and the ports are very small, need opened up.
They are currently not that much cheaper than bare AMC castings given the current Euro<>Dollar rate.
Considering that the valves, seats, springs, guides and machine work for a set of CNC ported T1 heads is exactly the same cost, the prices they ask for t4 heads is still shocking.
They are currently not that much cheaper than bare AMC castings given the current Euro<>Dollar rate.
Considering that the valves, seats, springs, guides and machine work for a set of CNC ported T1 heads is exactly the same cost, the prices they ask for t4 heads is still shocking.
Addendum to Newtons first law:
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
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- Joined: Sat Apr 15, 2017 10:17 pm
Re: Ported 3 stud head advice
I would like to see the chambers on these.
There is an alternative on ebay, only a couple of sets left:
Listing number 122434492702
There is an alternative on ebay, only a couple of sets left:
Listing number 122434492702
- Piledriver
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Re: Ported 3 stud head advice
I'd much rather have the worked AMCs than NOS Porsche heads.
You have to consider them bare castings either way if you want any life out of them.
The AMC castings are better than stock.
I would be curious if the "914" AA 3 studs have the right chambers/plug position as cast, that would be a huge bonus...
From the picture, the plug angle is 914. 2.0.
That alone might make them worth trying.
If they added some meat at the deck etc they could be a win... Tempted.
AA's website is horrible, I couldn't find those 2L castings by poking around.
You have to consider them bare castings either way if you want any life out of them.
The AMC castings are better than stock.
I would be curious if the "914" AA 3 studs have the right chambers/plug position as cast, that would be a huge bonus...
From the picture, the plug angle is 914. 2.0.
That alone might make them worth trying.
If they added some meat at the deck etc they could be a win... Tempted.
AA's website is horrible, I couldn't find those 2L castings by poking around.
Addendum to Newtons first law:
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
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- Joined: Sat Apr 15, 2017 10:17 pm
Re: Ported 3 stud head advice
I'd rather have NOS 914 than AMC as they don't make these in that configuration I don't want to dick around with bus heads to make them like the 3 studs. They do perform well and considering how old most of the 2nd hand ones are I am happy to get a set of those. Of course if they are put on a bus they'll break sooner but in a beetle with a good cooling system and external oil cooling, jetting, timing, exhaust etc. they'll give you years of fun. I'm sticking with 94's and 71mm stroke as these engines were built at the time.
- Piledriver
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Re: Ported 3 stud head advice
Yes, but two thousand dollars for stock bare heads that are still effectively cores//need full rework is insane, you can buy a pair of fullly reworked/914 chamber big valve 3 stud CNC ported full meal deal new AMCs for less.
If they were 950/pair it is almost reasonable. Almost. They are $950 each.
The std plug location is probably better for a Bus, the reworked heads usually have 12mm plugs for very good reason.
The 62-65cc 914 chambers would work well with flattops and a reasonable bus cam though.
With non-914 chambers you'd want std bus 12cc dish pistons.
I contacted AA for a pic of the chambers and the CCs on those heads.
If they were 950/pair it is almost reasonable. Almost. They are $950 each.
The std plug location is probably better for a Bus, the reworked heads usually have 12mm plugs for very good reason.
The 62-65cc 914 chambers would work well with flattops and a reasonable bus cam though.
With non-914 chambers you'd want std bus 12cc dish pistons.
I contacted AA for a pic of the chambers and the CCs on those heads.
Addendum to Newtons first law:
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
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- Posts: 42
- Joined: Sat Apr 15, 2017 10:17 pm
Re: Ported 3 stud head advice
Welding heads, adding material that was not there to begin with is no different than fixing some old heads imo. Not keen on that modification but each to their own. Nothing wrong with NOS heads, I favour genuine over aftermarket but again each to their own. Have no problem with AMC heads but it depends on what one wants to build/achieve. Anything can be made to perform depending on $$$, looking on some parts vendors, modified AMC heads into 914 3 stud lookalikes are moonbeams. If you're happy with 42x36, all you need is valves and springs, cc'ing chambers and flow ports to make sure they'll match, that works for me. Valve seats were no problem until we're talking high mileage, happy to see what happens when I get there in 10 years time
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Re: Ported 3 stud head advice
Good luck, and keep a close eye on CHT, the stock 2L heads crack easy, even pushing a 914...
You'll end up with $2500 into a pair of stock heads, at least.
BTW---The "fix" to avoid the chamber cracking welds up stock heads for 12mm plugs.
(I have been considering making up some silicon bronze plug inserts for mine to achieve that)
Moving the plug by itself provides the advantages on the 914 chambers, the larger chambers are not the big gain.
I don't think 2L 914 heads will be a feature in a bus, but its your money.
If they were reasonably priced,(at perhaps 950 a pair, instead of each) I might consider it myself.
The AMC castings are far better base to work on.
You'll end up with $2500 into a pair of stock heads, at least.
BTW---The "fix" to avoid the chamber cracking welds up stock heads for 12mm plugs.
(I have been considering making up some silicon bronze plug inserts for mine to achieve that)
Moving the plug by itself provides the advantages on the 914 chambers, the larger chambers are not the big gain.
I don't think 2L 914 heads will be a feature in a bus, but its your money.
If they were reasonably priced,(at perhaps 950 a pair, instead of each) I might consider it myself.
The AMC castings are far better base to work on.
Addendum to Newtons first law:
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.