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> Engine build Take 2, The rebirth of my 2270
rhodyguy
post Jul 18 2005, 08:08 AM
Post #61


Chimp Sanctuary NW. Check it out.
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surprizing cr. it's been a while since i visited your site. i look forward to the feature when you post it. when? 78mm(?), and i'm doing the fomula backwards to figure the piston size.

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Jake Raby
post Jul 18 2005, 08:30 AM
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90.5 mm bore.. its a 78.4mm crank...

I used a TI 90.5mm piston inside a Nikisil plated, rebored 90mm (1700) TIV cylinder.

CR = Efficiency! It only has .035 deck to boot!
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rhodyguy
post Jul 18 2005, 08:33 AM
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Chimp Sanctuary NW. Check it out.
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save those good 1.7 cyl guys!! (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) would those be oem or the "other" "nickies"? (IMG:http://www.914world.com/bbs2/html/emoticons/dry.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif)

k
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cnavarro
post Jul 18 2005, 08:39 AM
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I plated a set of cast iron cylinders for Jake for that project- trying to improve the wear and oiling properties while getting a little more power from the reduction in friction. :-)
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Jake Raby
post Jul 18 2005, 08:42 AM
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They aren' really Nickies... Just plated stock cylinders..
I am only doing it for friction reduction.

I am doing this for friction reduction as well... And also to control windage.

http://www.aircooledtechnology.com/r_d_superfinish.htm

Thats not chrome plated fellas- Those parts have been RAT Super Finished!
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Type 4 Unleashed
post Jul 19 2005, 12:46 PM
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CREATIVE TYPE lV ENGINEERING
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Jake, whats the cam advance here? 4 deg? And is it both in the cam and gear? or more one than the other? Whats it work out to, 2 deg a tooth?


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TravisNeff
post Jul 19 2005, 12:54 PM
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I thought on a type IV that the cam advance/retard was done by a selected cam gear itself, not by adjustment - no?
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Type 4 Unleashed
post Jul 19 2005, 01:31 PM
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CREATIVE TYPE lV ENGINEERING
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QUOTE (Travis Neff @ Jul 19 2005, 10:54 AM)
I thought on a type IV that the cam advance/retard was done by a selected cam gear itself, not by adjustment - no?

Yes and No, some cam companies make there cams with a 2 deg advance built in, some 0 deg, some of the type lV cam gears have a 2 deg advanced built in, some one may have there own gears made with a 4 deg advance.

There are the adjustable strait cuts, Magnum gears, makes strait cuts for type 1, and now makes them for type lV, $225 Fat performance has them made by Pauter $325.



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Type 4 Unleashed
post Jul 19 2005, 11:50 PM
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QUOTE (V6914 @ Jul 19 2005, 09:46 PM)
QUOTE (V6914 @ Jul 19 2005, 10:46 AM)
Jake, whats the cam advance here?  4 deg?  And is it both in the cam and gear? or more one than the other?  Whats it work out to, 2 deg a tooth?

(IMG:http://www.914world.com/bbs2/html/emoticons/icon_bump.gif)

(IMG:http://www.914world.com/bbs2/html/emoticons/icon_bump.gif)


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DNHunt
post Jul 20 2005, 07:17 AM
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I didn't advance the cam at all. Looking at the picture it's not as clear as I would have liked but, the dot on the cam is between the dots on the crank. If there is any advance built into the cam I'm not aware of it.

I'm back on track. 15 of the 16 head studs are in. I'm waiting for one from Charles to finish that task. The missing one is in a blind bore so I'll assemble the case.

Dave
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DNHunt
post Jul 20 2005, 07:24 AM
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Oil pressure relief pistons. I test fit them and the pistons are nice and free in the bore. So I laid out the pieces. It was finally time to get into the gasket kit. There is a copper sealing ring for the smaller assembly and an aluminum one for the larger


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DNHunt
post Jul 20 2005, 07:56 AM
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The large one goes on the right side front on the bottom


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DNHunt
post Jul 20 2005, 07:59 AM
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I found this old square from my dad and I used it with vice grips to tighten it. It fit the slot very well. Then a couple of taps with a mallet and chisel and it was seated real well


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DNHunt
post Jul 20 2005, 08:00 AM
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The small one goes between the lifter bores on cylinder # 1.


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DNHunt
post Jul 20 2005, 08:02 AM
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Here's a type 1 oil pump that's ready to go.


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DNHunt
post Jul 20 2005, 08:04 AM
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Nice and clean and packed with a little grease


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root
post Jul 20 2005, 10:58 AM
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Two Wheeled Type4 Completed!
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Allright I was following along O.K. until you got to the type1 oil pump??
Why are you using a type 1 pump? (IMG:http://www.914world.com/bbs2/html/emoticons/wacko.gif)

By the way! This thread 'ROCKS!' (IMG:http://www.914world.com/bbs2/html/emoticons/aktion035.gif)
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groot
post Jul 20 2005, 12:04 PM
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Dave,

I think I topped your breaking the stud move.

I tightened the case down while the front cam bearing was not set properly... thinking the case was binding up a dowel or something. Well, I cracked the front cam bearing journal.
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Jake Raby
post Jul 20 2005, 12:18 PM
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He is using a TI pump because it is far superior, it came in my kit and he is using my other oil system mods based on the TI pump.

My 3 liter is running the same pump- they rule. Tons of volume, better pressure and less HP draw from the engine..
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DNHunt
post Jul 21 2005, 06:00 PM
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Still making progress. Here's something that's easy to overlook. Thermostat cable pulley. It goes where the Q-tip is.


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