Engine build Take 2, The rebirth of my 2270 Options

[DNHunt]

Thrust bearing have flanges which limit the movement of the rotating assembly in it's long axis (crank and cam forward and backward). This is a double thrust cam bearing. If you are building an engine you will hear about this. Both halves have trust surfaces.

[DNHunt]

Here are the dowels in the right side of the case. There are 4. One is hidden by the # 2 bearing half. These dowels are the reason the right side of the case is on the bottom and attached to the engine stand. They are a bitch to find if they fall out. Cam bearings are in too.

[DNHunt]

I set the thrust bearing in the case and centered it in the dowel then scribed lines on the bearing (someone far more clever than me came up with this). Then when you install the crank you rotate the bearing to the scribe marks and the dowel is centered.

[DNHunt]

Bearing #1 scribed.

[DNHunt]

Bearings scribed

[DNHunt]

Next I installed the cam and crank. I lined up the 2 dots on the crank gear with the dot on the cam gear

[DNHunt]

Check of clearances. Tightest spot is rod cap to cam lobe. About 2 mm

[DNHunt]

The last thing I did today was torque down the case through bolts to 36 'lbs and check the bearing squish on bearing #2. This was the only one that plastigauge would work on. It's between .001" and .0015"

[brp914]

Who made your counterweighted crank? Can you tell a difference between it and a regular one in any way with engine running?

What kind of rods are those?

'Nother little trick: install dizzy drive gear, special washer, and dizzy before closing the case. (Try pulling that drive gear w/o dropping special washer into case after closing case w/ engine in car if you get drive gear 1 tooth off)

Hey, good luck this time around.

[Mueller]

I'll be adding this to my "favorites".....I should be starting to put together a motor almost identical to yours, only major differance is the cam I bet....

Did you get the specs from Jake for clearances??

I'll have to see if he included them in my engine kit.....

[michelko]

QUOTE (Mueller @ Jul 15 2005, 08:47 PM)

I'll be adding this to my "favorites".....I should be starting to put together a motor almost identical to yours, only major differance is the cam I bet.... Did you get the specs from Jake for clearances?? I'll have to see if he included them in my engine kit.....

me too!

keep on postings pic´s (IMG:http://www.914world.com/bbs2/html/emoticons/smilie_pokal.gif)

(IMG:http://www.914world.com/bbs2/html/emoticons/smilie_flagge6.gif)

[Tom Perso]

Heheheh....

I have some of the same pictures Dave...

(IMG:http://www.qtm.net/~persoj/graphics/vw/rods.jpg)

That is a tight spot.

Also, good idea on scribing of the bearings. Here's what happens if you don't, then bolt the case together...

(IMG:http://www.qtm.net/~persoj/graphics/vw/crush_bearing_2.jpg)

(IMG:http://www.qtm.net/~persoj/graphics/vw/crush_bearing.jpg)

And no, the crank would NOT turn over after this stroke of genius...

Tom

[rhodyguy]

dave's new video, titled "much faster the second time around" (IMG:http://www.914world.com/bbs2/html/emoticons/chairfall.gif) . are you racing for the whistler trip? do you plan on breaking this one in with rocky's carbs? might not be a bad idea if it will work.

k

[DNHunt]

The scribe procedure is straight out of Jake's video and I've been told to do it that by other builders too. Jake's video has got a bunch of great ideas.

The clearances on the rod bearings are the same as last time and they were fine before. I wanted to check them cause the crank was polished. I still have to check on the bearing squish, but I think it's OK. Some specs are in Wilson's book and a lot of times stuff like that can be found by searching ShopTalk Forums. Jake's taken a lot of stuff off of there since (IMG:http://www.914world.com/bbs2/html/emoticons/stromberg.gif). If I get really stuck I Email Jake and he's been awful good about getting right back to me.

The crank came from Jake. I think DPR welded it but, I'm not sure. The rods are part of Jakes combo. They came from CB Performance but, I won't give the specs. I hope people understand I respect the fact that Jake has come up with combos that work through hard work and I won't give his hard earned knowledge away. No hard feelings I hope.

Kevin

It certainly is quicker the second time around. I don't know about this engine for Whistler. I do want to get it done before Gerry goes back to school cause time gets tight then. I really doubt the carb thing. I've got the bugs out of the FI so I'm kind of leaning that way.

Dave

[Tom Perso]

It's supposed to be quicker the second time around... After I lunched my cam and lifters, the motor came out and on the bench. I got a few of those "Well, it's apart again, I might try this" and "I think it needs more compression, and Aircooled.net just got those new AL pushrods, so I'll bump it up some more".

Ahhh, the slippery slope.

Glad to see it's going together Dave. I'm really excited to see the MS work with it!!!

Tom

[Jake Raby]

You should see the clearances inside the 3.0!

The rod to cam clearance is only .018 at max interferance

Works like a charm!

[IronHillRestorations]

I remember the thread on the engine running too rich and washing down the cylinder walls, and the rings didn't seat. What else happened??? (IMG:http://www.914world.com/bbs2/html/emoticons/sad.gif)

[DNHunt]

Perry

Here's a link to the dead engineThread

[Type 4 Unleashed]

QUOTE (DNHunt @ Jul 15 2005, 06:34 PM)

Next I installed the cam and crank. I lined up the 2 dots on the crank gear with the dot on the cam gear

Jake, you see this pm me, I have a question?

Thanks

[IronHillRestorations]

QUOTE (DNHunt @ Jul 16 2005, 05:07 PM)

Perry Here's a link to the dead engine

Thanks for the link Dave!

Was the cam the only thing that got roasted? I hope the pistons and Nickies survived OK? I remember seeing those babies at Duke's last year . (IMG:http://www.914world.com/bbs2/html/emoticons/drooley.gif)