Yamaducci's 2498cc Turbo Build

[yamaducci]

Hello and welcome to the long coming Build thread of my 2498 cc Turbo engine.
I usually hang out on the Samba but thought this is better suited here....

Just to start the list off, here is the basics of my build and car:
Manx Style Fibreglass Buggy rebuilt and custom molded by me (Found melted in a field in West Virginia)
Full roll cage and pan-off restoration

2498 cc Type 1 Turbo that I am currently re-building:
AS41 Mag Case Lifter bores bushed by Brothers Machine
Case has been bored, clearanced, plugged including cooler, relief bores refinished, full flowed, German Pickup, 6 Shuffled pins, Deep stud #3
Porsche Piston Oil Squirters.
All moving parts "0" Balanced by Brothers Machine
Bob Hoover oiling mods on lower half to improve 1/2 side oiling
External 1&2 Side oil line to cam journals
Web 86C on 112 Lobe centers and clearanced
Udo Becker Tool Steel Lifters
New Magnum Straight Cut Cam Gears
90mm full circle crank Wedgemated/8-Dowelled/1-7/8" Chromoly Nut
5.7 Eagle Rods w/5/16" ARP 2000 Bolts
Long Cylinders Cut to length and honed to specific clearance
8mm Chrome Moly Long Head studs
94mm Wiseco's Pistons Dished 8cc's
"0" Deck height to top of cylinder.
.060 Copper Head gaskets
~8.8:1 CR
Competition Eliminators with 46x40 valves and reshaped combustion chambers with 62cc's
Currently designing additional fins in AUTOCAD to be welded on for added cooling on the street (Modification may be marketed soon!)
Heads ported/polished and rebuilt by Greg/Steve Tims at Performance Workshop
K800 Springs
Manton tapered Chromoly Pushrods
All Bearings Calico Dry Film Lube Coated
Bugpack Dry Sump system with 6 quart tank
BMD Dry Sump serpantine belt system with reduced size top pully (stock ratio)
1.4:1 Autocraft Needle bearing Roller Rocker arms; Modified for better oiling and polished shafts
Rocker arm spray bars
MSD 6AL; May Change to Crank trigger with COP and boost retard
CB 8-Injector Fuel Injection w/ 48mm throttle bodies (will likely switch to a 1 ECU/Coil on Plug Ignition option like Tec 3)
Turbo T04b35 with Blow off valve and wastegate
1 5/8 Header
Industrial Fan Shroud (no dog house or fresh air)
Welded fan (Currently developing wider carbon fiber fan)
Remote oil radiator and fan
Brad Penn Oil
Everything "0" Balanced, Blue Printed and deburred and Polished where needed

Rancho Built Early IRS Transmission:
Regeared with All Weddles will update with 1-4 ratios
3.88:1 Ring and Pinion
1st =
2nd =
3rd =
4th = .89
Quaife Limited Slip Torque Biasing Differential
930 Porsche CV's and Axles
Hydraulic clutch
Stage IV Kennedy Pressure Plate/ 3000Lb Clutch
Copper Head disk -6 Puck
LAT Oil
26" Tall 355 Street tires
26x10.5 Slicks
Wheelie bars = Hell YES!

[Wally]

Cool and daring engine!
As you may like comments since your not posting a question, mine would be: by-by transmission (ring/pinion) even though your turbo is too small

I am interesting in your rocker arm spray bars: what do they look like?
Also to the oiling mod of your 1.4 rockers: pic pls!

Tnx,
Walter

[yamaducci]

Cool and daring engine!
As you may like comments since your not posting a question, mine would be: by-by transmission (ring/pinion) even though your turbo is too small

I am interesting in your rocker arm spray bars: what do they look like?
Also to the oiling mod of your 1.4 rockers: pic pls!

Tnx,
Walter

Yes I took out the last Super diff in about 6 passes and a total of 500 street miles. Installed a Quaife and regeared all 4 with Weddles. Pics of everything to follow. Stay tuned. Comments welcome

[yvre]

This is going to be good!

[Soul]

Interested in the oiling mod of your 1.4 rockers too!

[yamaducci]

Interested in the oiling mod of your 1.4 rockers too!

This mod will be coming toward the end of the long block build. It's in my head so no pics yet.

[miniman82]

CB 8-Injector Fuel Injection w/ 48mm throttle bodies (will likely switch to a 1 ECU/Coil on Plug Ignition option like Tec 3)

Might want to ask Jason about that (stripped), I believe he was the one who had horrible troubles with it.

[Howie]

Don't forget a neck brace when you drive that monster!

A nice build!


.

[ruff]

Wow, cool build!!!

[Buggsy]

So when all said and done, you'll have what, $25K rapped up in it?

[yamaducci]

So when all said and done, you'll have what, $25K rapped up in it?

Easily that much in the car but I will probably do an Excel Sheet when I am done. That still won't show the total for broken parts and multiple rebuilds.
I already have all the parts in the above list and all the transwork is in the car so at least the hard part of collecting the parts is done.

[sweetlokin66]

CB 8-Injector Fuel Injection w/ 48mm throttle bodies (will likely switch to a 1 ECU/Coil on Plug Ignition option like Tec 3)

Might want to ask Jason about that (stripped), I believe he was the one who had horrible troubles with it.

I don't know why he would have a problem with electromotive. My dad has one on his vert. I'm putting one in my car and I used one in my schools formula sae car. All came with excellent tech service. Wasn't cheap but they will take care of you. We were in a pinch trying to get the motor tuned in the sae car and one of the techs gave me his personal number to work with him on the weekend. Turned out to be our electrical guys problem

[shag55]

I've actualy built a 90x94 motor and didn't like it a bit. Sorry but I think it's way to much stroke for a street motor especially going turbo. Your car will be faster and be well mannered with a 78-82 stroke.
Good luck on the build though!

[55superbeetle]

Might be a little too much clutch...is this a drag car or street car? I normally don't express any of my negative opinions but you are building an overly expensive engine unless you are trying to make a million horsepower. Judging from your decision to use a mag case, type 1 gearbox, turbo size and the fact that its a buggy would lead me to believe that 3-4 hundred horsepower would be enough. This can be achieved with a much cheaper and simpler setup.

[seabeebuggy]

that engine would rock in my buggy.