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Author Topic: Waiting for HM1103. Might as well build a motor!  (Read 52009 times)

Spuddyboy

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Re: Waiting for HM1103. Might as well build a moto
« Reply #30 on: September 10, 2007, 09:41:13 PM »
Each bore is slightly different, so you need to gap rings in sets for each cylinder.  Keep track of them!
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Spuddyboy

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Re: Waiting for HM1103. Might as well build a moto
« Reply #31 on: September 10, 2007, 09:45:24 PM »
Next we assembled pistons and rods.  We lettered each piston, and matched them with ring sets.  
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Spuddyboy

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Re: Waiting for HM1103. Might as well build a moto
« Reply #32 on: September 10, 2007, 09:47:41 PM »
We checked ring to groove clearance before installing rings.  

Kerianne's fingertips are still healing!  :'(
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Spuddyboy

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Re: Waiting for HM1103. Might as well build a moto
« Reply #33 on: September 10, 2007, 09:49:46 PM »
Piston assembly is lubed and placed in ring compressor and inserted in bore.  
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Spuddyboy

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Re: Waiting for HM1103. Might as well build a moto
« Reply #34 on: September 10, 2007, 09:51:12 PM »
Piston is lightly tapped into bore.  This will not damage rings.  
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Spuddyboy

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Re: Waiting for HM1103. Might as well build a moto
« Reply #35 on: September 10, 2007, 09:53:04 PM »
We had trouble deciding which way the pistons went.   :o

We finally had to pull a head out and hold it up to make sure.

This orientation is correct but the writing etched on the piston is upsidedown. This is what confused us.  
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Spuddyboy

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Re: Waiting for HM1103. Might as well build a moto
« Reply #36 on: September 10, 2007, 09:55:07 PM »
This is why we notched the block in the beginning.  The Rod bolt head would have broken off on the bottom of the cylinder.  
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Spuddyboy

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Re: Waiting for HM1103. Might as well build a moto
« Reply #37 on: September 10, 2007, 09:57:44 PM »
Also make sure the rods clear the main girdle.
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Spuddyboy

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Re: Waiting for HM1103. Might as well build a moto
« Reply #38 on: September 10, 2007, 10:03:06 PM »
Gene (Kerianne's dad) stopped by to give us a hand and talk us through some things.  He built a few performance engines in his day.  
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Spuddyboy

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Re: Waiting for HM1103. Might as well build a moto
« Reply #39 on: September 10, 2007, 10:04:54 PM »
Kerianne's torqueing the main cap bolts with the girdle installed. They have to be torqued twice.
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Spuddyboy

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Re: Waiting for HM1103. Might as well build a moto
« Reply #40 on: September 10, 2007, 10:06:06 PM »
Torqueing the rod bolts.  These have to be torqued 4 times.  
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Spuddyboy

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Re: Waiting for HM1103. Might as well build a moto
« Reply #41 on: September 10, 2007, 10:07:57 PM »
Timing chain was installed next.  Line up the marks between the two sprockets.
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Spuddyboy

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Re: Waiting for HM1103. Might as well build a moto
« Reply #42 on: September 10, 2007, 10:10:41 PM »
Windage tray and oil pickup were installed. Notice the tight clearance between the edge of the windage tray and the pickup.  Loctite is used on the oil pump and windage tray fasteners.
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Spuddyboy

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Re: Waiting for HM1103. Might as well build a moto
« Reply #43 on: September 10, 2007, 10:13:40 PM »
"Big Assed" Oil Pan was dry fit.  It holds 9 quarts and has baffles and trap doors out the wazzu!  8-)Clearance between bottom of pickup and pan was checked.  
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berzerko

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Re: Waiting for HM1103. Might as well build a moto
« Reply #44 on: September 11, 2007, 06:28:01 AM »
Very cool never built a motor makes me want to try!!
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4v mod motor with a carb hm 1075
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