 Puttin together a Raby kit engine, Deck Height revisited |
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| DNHunt |
 Aug 28 2004, 10:31 AM
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#1
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914 Wizard? No way. I got too much to learn.  Group: Members Posts: 4,099 Joined: 21-April 03 From: Gig Harbor, WA Member No.: 598  |
Building this has been a blast. I have certainly learned a lot. Jake has been very patient and given me plenty of rope but, when I've started to wander he's tugged me back in line.
Deck Height has been a revelation. My first attempts were all over the place. After working on this for a total of 8 hours I really believe we've got a handle on it. I've learned a bunch. First, these are very small dimensions. Jake wanted the deck within .004" on all 4 cylinders. We really struggled with this. Check this out a single sheet of paper is between .002 and .003. Attached image(s) 
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| DNHunt |
Aug 28 2004, 11:11 AM
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#2
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914 Wizard? No way. I got too much to learn. Group: Members Posts: 4,099 Joined: 21-April 03 From: Gig Harbor, WA Member No.: 598 |
Time to order some more shims. Jake said for me shoot for a .060 deck and a compression ratio of 9.8:1. I can't get both to the targets. Either the deck has to be tighter than .060 or the compression ratio hasto be lower than the target. I'm leaning towards .0134" shims and a deck of.056 with a CR of 9.7:1.
Jake's on vacation right now so I won't be making a final decision until he gets back. Here's the whole rig on the left bank of cylinders Dave Attached image(s) 
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Posts in this topic
DNHunt Puttin together a Raby kit engine Aug 28 2004, 10:31 AM
red914 i sure hope i can see this beauty when you are don... Aug 28 2004, 10:39 AM DNHunt When we put the cylinders and pistons on the first... Aug 28 2004, 10:40 AM DNHunt We tried switching cylinders and that didn't h... Aug 28 2004, 10:58 AM DNHunt Here's the deck of #3 .062 at the outside edge Aug 28 2004, 11:00 AM DNHunt Welcome to the real world son. Gerry's doin th... Aug 28 2004, 12:11 PM thesey914 Gerry should be thankful you're letting him us... Aug 28 2004, 01:30 PM Demick Here's the easy way to figure out the C.R.:
a... Aug 28 2004, 01:43 PM seanery Must be really tough math! TWO Calculators... Aug 28 2004, 02:09 PM GWN7 QUOTE
Porsche Rescue Ok Dave, I have no shame. What exactly is "deck he... Aug 28 2004, 04:46 PM Brett W You will have a bigger problem with detonation at ... Aug 28 2004, 04:51 PM
LS6/914 Dave, Give a call if you need a extra hand, dial i... Aug 28 2004, 08:25 PM |
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