Alloytec head dumb idea or not?

[Nzpure]

I have been thinking about how to get more power out of the poor old bastard child ecotec.
Has anyone tryd or thought of trying to put an alloytec twin cam head on a ecotec.I could prolly get one free from work so i was thinking about trying it. You would prolly needs heaps of machining, but would it pay off??
Any tips or ideas would be interesting to talk about.

[VT-565]

You'd be better off stealing an alloytec to install into your car. Even if you DID get caught by the police, it would be less trouble.

[Cheap6]

I have heard of this type of thing has been done before - I'm thinking of a BMW K-series 'bike head on a BMC (Mini) A-series bottom end.

Legal registration with a non-emission complying engine would be the major issue, regardless of any difficulties in carrying out the conversion though.

[vn calais manual]

I have been thinking about how to get more power out of the poor old bastard child ecotec.
Has anyone tryd or thought of trying to put an alloytec twin cam head on a ecotec.I could prolly get one free from work so i was thinking about trying it. You would prolly needs heaps of machining, but would it pay off??
Any tips or ideas would be interesting to talk about.

either put an alloyech in, or save ur money.

[ephect]

well, alloytec's are 3.6lt compared to the 3.8lt ecotecs.. now i dont know if its all in the stroke or bore, but if its bore, then the heads wont fit on the ecotec block. getting around that.. then you have to some how get ur twin cam running let alone adjusting as per as it should.

yes it probably could be done, but for all the hassle and problems along the way, and constant cash continually poored into it. ur best be is to transplant an alloytec, cheaper in the long run

[immortality]

. Even if you DID get caught by the police, it would be less trouble.

Legal registration with a non-emission complying engine would be the major issue, regardless of any difficulties in carrying out the conversion though.

no probs here in NZ. we can get just about anything certified

[azkwazere]

no probs here in NZ. we can get just about anything certified

except legal marriage of sheep and man

aZk.

[immortality]

except legal marriage of sheep and man

aZk.

welll you got me on that one, no doubt someone has tried though

[Cheap6]

Sorry, missed the 'NZ' in the login name.

This may be of interest:

Twincam Mini - Original BMW K head transplant



To quote(ish) from Black Sheep - "That brings a new meaning to animal husbandry."

[VT-565]

no probs here in NZ. we can get just about anything certified

I was referring to the fact it would be less trouble if you got caught stealing an alloytec instead of grafting heads onto an ecotec bottom end.

You'd be better off grafting a whole ZR-1 engine in there

[ScoHar]

anything can be done with the right amount of money/lotto

[VT-565]

anything can be done with the right amount of money/lotto

So you'd end up with a mega dollar taxi engine lol

Would be like screwing lindsay lohan's head onto tina turners body

[immortality]

Would be like screwing lindsay lohan's head onto tina turners body

"shudders" at that thought. but then thinks about LS9 goodness........

[andyman]

hmm well considering the alloytec head are are about twice the width of an ecotec head, dont support push rods, i think they are the two major issues you have to address

[HIROLLA]

alloytec is dual cam

not possible

[soop]

Thats right up there with putting LS2 heads on an ecotec.

[Nzpure]

well for starters u would do away with ur orig cam and push rods as the alloy tech heads are dohc and then u would have to get a custom chain, there would be a bit of mucking round but i reakon u could do it.
spec if u got the heads for free.

[Nzpure]

even possibly use the z32se heads off a vectra, but thats belt driven i dunno.
think outside the square guys forget money

[soop]

Riiight,

Have you fella's even considered the fact that they wont actually bolt up?

[B3ND3R]

Riiight,

Have you fella's even considered the fact that they wont actually bolt up?

q-bond!

that and tape.

[greenfoam]

Luke showed me a picture of a OHC Ford head on a 202 the other month, quite a bit of tig welding involved but he got it done. It was quite legendary actually

[Pub247]

people have grafted a merc 24v 6 dohc on a 186. Which head was on the 202 foamy? 250 xf??? I have heard of a lot of the hybrid ford/holden 6's heads and cranks have been done.

On alloytech you dont have a chance besides the fact that the bolt pattern is completely different the heads are also off a 60 degree v6. They run 3 timing chains so i think you'd have trouble setting up good setup. The cost vs benefits is totally unrealistic better off dropping in a whole motor

[Raptorsc]

Easier just fill the cylinders of the "poor old bastard child ecotec" with some compressed air. I dunno, maybe thats too easy or you are on license restrictions of some sort.

[VT-565]

There was a guy in North QLD that used to make OHC heads for the holden straight sixes at least, I think the name was Bob Krogdahl.
I've only ever seen one in a magazine. Would be right up there with rockinghorse sh*t in the rarity stakes.

But if you were to forget money, why not contract some engineers to solidworks some heads up, get them cast and 5 axis CNC machined?

You said forget the $$'s! lol

But seriously, (I like waffling on about this sort of stuff) has anyone thought of de-stroking an ecotec? I know it has a bit of torque in it's own right, but going back to the laws of physics, if you reduce the amount of travel for a piston, that's less inertia which allows you to spin an engine faster. I reckon if you destroked one to say, 3.2 or 3.4 litres, give the heads a nice clean up and get them flowed, it really would scream.
I guess it depends on what you want to do with it.

[one_and_only2004]

But seriously, (I like waffling on about this sort of stuff) has anyone thought of de-stroking an ecotec? I know it has a bit of torque in it's own right, but going back to the laws of physics, if you reduce the amount of travel for a piston, that's less inertia which allows you to spin an engine faster. I reckon if you destroked one to say, 3.2 or 3.4 litres, give the heads a nice clean up and get them flowed, it really would scream.
I guess it depends on what you want to do with it.

A friend with a VU ute just sent his engine away to get this done. He'd initially stroked it to 4.2L, and now it's been destroked to 3.6-7L and the whole engine was balanced. $9,800 though....