Alloy Heads

Submitted: Wednesday, Mar 29, 2006 at 19:22
ThreadID: 32318 Views:1338 Replies:4 FollowUps:3
This Thread has been Archived
Hi.
What really is the advantage of alloy heads in comparison to cast iron. All the old petrol and diesel motors seldom had head issues , even after the ocassional overheat. Alloys lighter, but it cracks , warps, corrodes easier than cast. Ford falcon cars have had head issues since they changed to alloy heads way back in the early 1980s. All the early pommy tractors , David brown, fergies, fordson etc complety wore out before any head issue, as did alot of other motors. Its bugged me a bit since owning a e2200 mazda with the R2 motor ,the alloy head came off that heap off crap three times in as many years. Hope the landyis better.

Cheers Axle
Back Expand Un-Read 0 Moderator

Reply By: Lone Wolf - Wednesday, Mar 29, 2006 at 20:38

Wednesday, Mar 29, 2006 at 20:38
The only thing I have been able to put it down to, is a meagre weight saving. I don't know how many kilo's, but I have always thought that the overall saving would of paled into insignificance, once you loaded the car with 2 adults, fuel, and luggage.

Wolfie
AnswerID: 163722

Reply By: Member - Blue (VIC) - Wednesday, Mar 29, 2006 at 21:33

Wednesday, Mar 29, 2006 at 21:33
After balancing on the strut towers of an XC Falcon trying to replace the heads on a 302C, I fully understand why they went to alloy... My back will never be the same... Oh to be young and poor, so poor you can't afford a simple Block&Tackle for your mum's garage roof...
AnswerID: 163750

Follow Up By: Axle - Wednesday, Mar 29, 2006 at 21:42

Wednesday, Mar 29, 2006 at 21:42
Good old days," Good Because there gone", Replace Heads on that motor?,must of done some miles.
0
FollowupID: 418526

Follow Up By: Member - Blue (VIC) - Wednesday, Mar 29, 2006 at 21:56

Wednesday, Mar 29, 2006 at 21:56
Not too many miles... Truth be told, I was poor because I spent 2.5k on that motor and was going through a set of back tyres every 3 or 4 weeks... It's nice to look back and see how foolish you were...
0
FollowupID: 418529

Reply By: TerraFirma - Thursday, Mar 30, 2006 at 09:59

Thursday, Mar 30, 2006 at 09:59
Alloy heads are lighter, are capable of sustaining higher compression rations, don't knock as easily, dissapate heat better , that's about it from memory.
AnswerID: 163838

Reply By: nowimnumberone - Thursday, Mar 30, 2006 at 17:49

Thursday, Mar 30, 2006 at 17:49
it comes down to weight savings.
but if your cooling system is maintained properly corosion shouldnt be a poblem.
AnswerID: 163913

Follow Up By: Axle - Thursday, Mar 30, 2006 at 19:01

Thursday, Mar 30, 2006 at 19:01
Guess its was a weight issue, but good point mentioned above in regard to sustaining higher compression ratios.
0
FollowupID: 418725

Sponsored Links

Popular Products (13)