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Giant Head arrived!
Posted: Tue Feb 26, 2019 11:15 pm
by Matt_A_1926
Arrived in the mail today. I'm as happy as a clam and can't wait to put it on the car.
Re: Giant Head arrived!
Posted: Wed Feb 27, 2019 4:32 am
by Chris Barker
You will like it.
A noticeable and very useful improvement at low and mid revs, but not too much.
Some sources say 30% extra power - 6HP!
Any idea what colour they were originally?
I painted mine black with silver letters - it's worth having just for these!
Re: Giant Head arrived!
Posted: Wed Feb 27, 2019 7:18 am
by RustyFords
ooohhhh.....nice.
Re: Giant Head arrived!
Posted: Wed Feb 27, 2019 8:01 am
by NoelChico
has anybody measured the head capacity on a Giant? just to compare to a Z or Prus head
Re: Giant Head arrived!
Posted: Wed Feb 27, 2019 8:04 am
by Chris Barker
I measured and calculated a CR of either 5.3:1 or 5.6:1 - I can't recall exactly.
Re: Giant Head arrived!
Posted: Wed Feb 27, 2019 8:43 am
by John Warren
Very nice, I'll bet you will like it!
Re: Giant Head arrived!
Posted: Wed Feb 27, 2019 9:02 am
by MWalker
Be sure to paint it red before putting it on your engine.
Re: Giant Head arrived!
Posted: Wed Feb 27, 2019 11:14 am
by Scott_Conger
That is a Big Giant Head, for sure. Jawsbot!
Re: Giant Head arrived!
Posted: Wed Feb 27, 2019 11:26 am
by Original Smith
I put one on my car about a year ago. I noticed a difference, but not much! Be sure to get it magnefluxed before using it.
Re: Giant Head arrived!
Posted: Wed Feb 27, 2019 12:33 pm
by Matt_A_1926
Chris, was that cr for a giant or giant super? I believe the giant super was a little higher in cr. It has a minor crack in the water outlet jacket area. A good media blast, pin and stitch the jacket crack, and it should be good to go.
I'm not sure on the color, in m trying to decide myself.
Spark plugs threaded in fine too.