PDA

View Full Version : Type 4 Build tips?



Gonzo 5/1600
November 15th, 2009, 18:28
So finally after months or research and parts collecting I'm ready to rebuild the type 4 (bigger, better, bader) in my pre runner Baja. Tomarrow I'm dropping off all the parts for the machining processes; rod reconditioning/bearing sizing, crank polishing, valve job, flycutting heads for CR, lifter resurface, fine balancing of everything etc.

So here's the basic parts breakdown and intended plans:

-96mm cylinders with JE pistons
-Custom cam grind from VW Paradise (fairly aggressive)
-2.0L 914 cylinder heads
-Planning on 9:1 compression
-Dual 44mm Weber IDFs
-Dual valve springs
-Chromoly valve retainers/locks
-30mm oil pump
-Stock 2.0 bottom end (71mm stroke) but race balanced
-Keeping 911 cooling but improving with in shroud deflector
-Changing exhaust from supertrapp to Flowmaster turn down

The floor of my garage looks like a VW show swap meet covered in parts from multiple engines.

If anyone has any advice for my first Type 4 build I'd appreciate the tips! I'm hoping to have a short block together by next weekend. THANKS!

PS-Thanks to everyone who has helped with my TIV questions in the past.

partybarge_pilot
November 15th, 2009, 19:27
First tip, avoid VWP like the pluage.......

Gonzo 5/1600
November 15th, 2009, 19:36
First tip, avoid VWP like the pluage.......

Hmm, sorry to hear it sounds like you had a bad experience. Jason does our race engine and we have been doing business with them for years with positive results. They have done right by us for a long time...

partybarge_pilot
November 15th, 2009, 19:39
A couple bad experiences. Things that any rookie should have caught. That wasn't that bad, lying to Me about them was the last straw.

Gonzo 5/1600
November 15th, 2009, 19:42
Well everyone has an opinion,

Anyone have any applicable tips for my type 4 build?

Wendell #527
November 16th, 2009, 11:39
I would suggest using a sucker pump for the dual 44s. Really eliminates flooding.....

Gonzo 5/1600
November 16th, 2009, 15:06
Thanks, I don't drive this particular Baja too crazy but if I have flooding problems I'll have to rig that up.

Wendell #527
November 19th, 2009, 11:42
Thanks, I don't drive this particular Baja too crazy but if I have flooding problems I'll have to rig that up.

Yea, it helped stop the sputtering when you hit bumps or went downhill or whatever. Fat knows how to set them up right.

Gonzo 5/1600
November 19th, 2009, 12:40
I'm getting parts back from the machine shop today so I should have a short block together later today.

But then I need to measure the deck and send the heads back out to be flycut for my target CR. Hopefully I'll have a longblock by Thanksgiving.:)

5racer
November 19th, 2009, 21:37
make sure oil pump is a o-ring type ,keeps the pump from cavitating .fat will machine yours or you can buy one already set up and blue printed.

Wendell #527
November 21st, 2009, 16:24
make sure oil pump is a o-ring type ,keeps the pump from cavitating .fat will machine yours or you can buy one already set up and blue printed.

I had a heck of a time getting mine not to leak. Cutting an o-ring just seemed scarry to me. I suppose it must work, but it just looks like a weak spot. I tried the aluminum plates and they leaked, too. Ended up just machining both surfaces flat and sealed them real good. I don't dis-agree with the o-ring idea, though...

Gonzo 5/1600
November 21st, 2009, 18:55
Short block assembled, everything is looking great. Just need to get my heads, pistons and lifters back from machining. Still hope to have a longblock together next weekend!

baja stu
November 21st, 2009, 20:37
I had a heck of a time getting mine not to leak. Cutting an o-ring just seemed scarry to me. I suppose it must work, but it just looks like a weak spot. I tried the aluminum plates and they leaked, too. Ended up just machining both surfaces flat and sealed them real good. I don't dis-agree with the o-ring idea, though...

Steve wasn’t talking about an o-ring on the front for the oil pump cover plate but an o-ring for the base of the pump that goes into the block. I just built a 2.7 type 4 and it was just as easy as a type 1.
Here is a tip. Drill out the stock block studs and install 1/2" through bolts.

Wendell #527
December 3rd, 2009, 11:23
Steve wasn’t talking about an o-ring on the front for the oil pump cover plate but an o-ring for the base of the pump that goes into the block. I just built a 2.7 type 4 and it was just as easy as a type 1.
Here is a tip. Drill out the stock block studs and install 1/2" through bolts.

Good stuff. I didn't know I could use through bolts there. Thanks

Gonzo 5/1600
December 3rd, 2009, 13:27
After a bunch of set backs I still only have the short block together... turnkey by the weekend hopefully. Can't wait to hear this thing! Pictures to follow its completion.

Gonzo 5/1600
December 7th, 2009, 19:29
Finally! My first engine build is complete. We got the engine in the car last night and plumbed and wired earlier today, after some first run anxiety and double checking it started right up. Just carb tuning and a few loose ends to finish up before driving, can't wait! Here are some pics of the final result:

http://i726.photobucket.com/albums/ww268/wilsonatgonzoracing/IMGP2439.jpg


http://i726.photobucket.com/albums/ww268/wilsonatgonzoracing/IMGP2442.jpg

New turn down with Flowmaster (nice and throaty).
http://i726.photobucket.com/albums/ww268/wilsonatgonzoracing/IMGP2444.jpg

Here is the internal cooling air deflector I constructed. The aluminum bisects the airflow coming off the back of the fan and splits it so half goes to #1 and #3, and half goes to #2 and #4.
http://i726.photobucket.com/albums/ww268/wilsonatgonzoracing/IMGP2432.jpg

I've got other more detailed build pics if anyone is interested. Thanks for viewing!

Wendell #527
December 14th, 2009, 13:10
That looks nice. The only thing I don't like is the air cleaners. That type of air cleaner cost me an engine in V2R.... I say if you're gonna use it in the desert get an UMP and don't learn the hard way like I did.

Gonzo 5/1600
December 14th, 2009, 13:22
Yeah I know those are not ideal filters but I have very limited space in the engine bay of my daily driver bug, (it's a pretty mild Baja, not a racecar). I would run UMP plenums and filter if I could fit them in there. I will be putting outerwears on the current filters for a little more protection.

mebuildit
December 16th, 2009, 17:15
That looks great! Good job on the build. Can't wait to see it run and get your feedback

Gonzo 5/1600
December 16th, 2009, 19:16
Thanks! It's in the car and running now (after some serious setbacks). Getting it on the dyno Friday to dial in the jetting etc. Hopefully I can get some good video of it working hard in the next few weeks.

Gonzo 5/1600
December 18th, 2009, 19:59
Just finished up a day of dyno time...WOW!
Just barely shy of 120hp and 115 ft/lbs. I have to say I'm impressed, I was not expecting such phenominal numbers out of my first build. I'm wiped out from this past month of chasing parts, building, re-building, tuning, etc. What a project!

Hope to get some video together of the car in Baja in the next few weeks. (motor sounds great!)

Fourstroker
December 21st, 2009, 11:11
Just finished up a day of dyno time...WOW!
Just barely shy of 120hp and 115 ft/lbs. I have to say I'm impressed, I was not expecting such phenominal numbers out of my first build. I'm wiped out from this past month of chasing parts, building, re-building, tuning, etc. What a project!

Hope to get some video together of the car in Baja in the next few weeks. (motor sounds great!)

120hp to the wheels or at the crank?

Gonzo 5/1600
December 21st, 2009, 11:55
Oh yeah forgot to clarify that... Thats ~120HP, ~115 lbft at the rear wheels of my daily driver/prerunner Baja.

Still getting used to it, I may change to larger venturis after what we saw on the dyno.

Gonzo 5/1600
January 13th, 2010, 01:08
Finally here's some video, trust me it sounds way better in person but it sure goes! I was able to get it just over 97mph on dirt in Baja so I'm sure it would do better in the right conditions! Thanks for viewing.

YouTube- Type 4 Baja Bug