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GT Jets

  • Karma: +192/-0
Re: 1977 GT Resurrection
« Reply #25 on: January 05, 2011, 10:34:53 PM »
Can't tell from the stamp...Is that KD (kiln dried) lumber?

GT
  • Boat #1: 1992 Carrera 20.5 Elite (I/O bitches)
  • Boat #2: 19' Bubble deck Jet BBC Berkeley
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If i get some free time tonight at work, ill play with it and post it for everyone to see.

Time to man up and yank it John!  :banghead:
Ray

77GT

  • Karma: +1/-0
Re: 1977 GT Resurrection
« Reply #26 on: January 06, 2011, 04:19:00 AM »
It is supposed to be kiln dried spruce.

You can use it as a straight edge.

My FIL had 2 16' pieces that a neighbor had given him.

This lumber has been stored for many years.

Taking the first cut was tough.
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77 GT Boats

77GT

  • Karma: +1/-0
Re: 1977 GT Resurrection
« Reply #27 on: January 15, 2011, 04:46:14 PM »
What a nice day.
It was in the 60's.
I made some progress with the stringers.
I ran them through the planer and rounded the edges with my router.
I also belt sanded them with 80 grit.
The cross pieces are there to set the spacing for the motor mounts.
Tomorrow I want to seal the stringers with resin and then I should be able to glass them in.


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77 GT Boats

77GT

  • Karma: +1/-0
Re: 1977 GT Resurrection
« Reply #28 on: January 16, 2011, 04:25:02 PM »
I decided to use West System epoxy for my fiberglass work.

The metered pumps are the way to go and there is little odor from the resin.

I sealed the stringers today.  I'm curious as to how long it will take for the epoxy to cure since it only got up to 60*F today.

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77 GT Boats

tator321

  • Karma: +0/-0
Re: 1977 GT Resurrection
« Reply #29 on: January 16, 2011, 05:48:27 PM »
Looks ggod Sam! also looks like we got the same work going on. BTW ths cresent shaped blade I bought later and does work better for the long cuts  :thumbup:
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77GT

  • Karma: +1/-0
Re: 1977 GT Resurrection Engine
« Reply #30 on: February 21, 2011, 03:38:10 PM »
My engine has been hanging on the stand for the last 20 years.

I know, its a crime not to run a BBC.

I identified the block and heads.

As I recall, the pistons are 10.5 : 1

Cam was .525 @ 295 duration.  I need to find the cam card.

The heads are   3964290....69-70...oval..CLOSED..396, 402, 427, 454, 101cc chamber

The block is   3902406....396.......67......2 or 4 bolt 

The intake is a cast iron Q-Jet.

Holley 4609 Vacuum Secondaries, manual choke, even bore with adaptor to spread bore.

Standard points distributor.

The engine would run 5100 - 5500 RPM with a "A" impeller.

Exhaust manifolds are Glenwood water jacketed with chrome OT's.

The engine ran great the last time it was used.

I will open and inspect, replace gaskets and give it a tune up.

I plan on running my exhaust thru the transom, to make it more family friendly.

So tell me, what is the potential of this engine with the existing components?

Where would you put your money to gain more power?
« Last Edit: February 21, 2011, 03:42:40 PM by 77GT »
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77 GT Boats

Nordie

  • Karma: +13/-0
Re: 1977 GT Resurrection
« Reply #31 on: February 21, 2011, 04:58:47 PM »
intake and carb...also remember oils isnt what it used to be...if the cam still looks good make sure to run a zinc additive or oil with added zinc...
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If im not posting..I'm pooping!

77GT

  • Karma: +1/-0
Re: 1977 GT Resurrection
« Reply #32 on: February 21, 2011, 05:02:26 PM »
intake and carb...also remember oils isnt what it used to be...if the cam still looks good make sure to run a zinc additive or oil with added zinc...

So what intake and carb would you use?
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GT Jets

  • Karma: +192/-0
Re: 1977 GT Resurrection Engine
« Reply #33 on: February 21, 2011, 07:05:58 PM »
My engine has been hanging on the stand for the last 20 years.

I know, its a crime not to run a BBC.

I identified the block and heads.

As I recall, the pistons are 10.5 : 1

Cam was .525 @ 295 duration.  I need to find the cam card.

The heads are   3964290....69-70...oval..CLOSED..396, 402, 427, 454, 101cc chamber

The block is   3902406....396.......67......2 or 4 bolt 

The intake is a cast iron Q-Jet. Good for low/mid torque, but fall off at the top. Get a Performer RPM Air Gap or similar

Holley 4609 Vacuum Secondaries, manual choke, even bore with adaptor to spread bore. See above, should be in the 800 CFM range, I like mechanical secondaries with double pumps...

Standard points distributor.There are some fairly large gains to be had by going electronic, even a Pertronics kit would help

The engine would run 5100 - 5500 RPM with a "A" impeller.

Exhaust manifolds are Glenwood water jacketed with chrome OT's.

The engine ran great the last time it was used.

I will open and inspect, replace gaskets and give it a tune up.

I plan on running my exhaust thru the transom, to make it more family friendly.

So tell me, what is the potential of this engine with the existing components?  Should run pretty stout and reliable, you will need to run decent fuel (91-92 octane)

Where would you put your money to gain more power? As said before carb and intake and go with electronic ignition....Hands down...

GT
  • Boat #1: 1992 Carrera 20.5 Elite (I/O bitches)
  • Boat #2: 19' Bubble deck Jet BBC Berkeley
  • Like
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If i get some free time tonight at work, ill play with it and post it for everyone to see.

Time to man up and yank it John!  :banghead:
Ray

77GT

  • Karma: +1/-0
Re: 1977 GT Resurrection
« Reply #34 on: May 28, 2011, 12:51:58 PM »
Project is alive and well.
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77 GT Boats

Nixonnow

  • Karma: +4/-0
Re: 1977 GT Resurrection
« Reply #35 on: May 28, 2011, 01:19:26 PM »
Project is alive and well.

pics, we want pics.  ;D
  • Boat #1: 1974 Hallett Bubbledeck
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