My engine combo

[bgbugman72]

So I'm looking at building another motor with some of the stuff I have.
I have:
110 cam and lifters
40 idfs with 30 or 32 vents, I would have to measure
90.5 a piston
78 crank
Stock case opened for 90.5
I am looking at building up a 2007 using this stuff.

Thinking about:
78. Crank
110 cam
90.5 b piston
5.5 rods??? Not sure about this length
Panchito heads, matched castings
1.25 rockers
40 idfs
1 1/2 exhaust
Kep stage 1 pressure plate

Really looking for good pep, occasional track, reliable motor. I've read so much on this combo and like what I've seen. What are your thoughts?
_________________
'72 Super Beetle.
'71 Bus
Wish I still had my '77 sunroof from high school.
78 vert for my wife

[Vanillagurilla]

Need bigger carbs.

[anthax]

I'm running a 2007cc. Pulls like a tractor from low revs to 4500. Not revving it to the moon, my bug is not a racecar.

I have a Scat C25 cam and use 137mm (5,4") I-beam rods.
Running 40mm Hpmx with 32mm vents.
044 heads with a 3 angle valve job, because the valve seats where %¤"#&"&¤ from CB.
Everything balanced and put i a new alu case.
Had to deck the block 0,8mm to get the squish where I wanted it.

[74 Thing]

I would be looking at a different camshaft. Check out the engine building threads above as well as on CBs site since you are using their heads and it will give you an idea of what similar size engines can do based on configuration.

You have to take into account what car the engine is going in and what your tranny ratios are as well as rear tire size and what rpms you want the engine to turn as well for what type of driving.

[Alstrup]

Yes the W110 is a little tiresome. On the other hand, with the parts he has available it can work ok. Just check it for accuracy (Very important IMHO. Some of the newer ones are downright awfull) Next, if ok, set it up on 106 ILC.

Rods. - What suits you. Personally I like relatively low RR so I would choose 5,4´s and machine the cylinders to correct deck.

T

[bgbugman72]

You guys don't like the 110? I thought it was a good cam, it can sit on my shelf for a while longer. Is scat c35 is better?
This is going to go in my 72 super with stock trans with 205 70 15s
I was thinking 5.5 rods so I didn't have to shim cylinders but want sure on that. 5.4 a better choice?
Carbs have the 32 vents. Thought I could always add 44s at a later time of I wanted.
I am mostly looking for a decent power motor that I can have fun at the local track from time to time, maybe times a year. This is my summer time car.
_________________
'72 Super Beetle.
'71 Bus
Wish I still had my '77 sunroof from high school.
78 vert for my wife

[BarnFine]

This is a great discussion on rod length and gives you the information to make an informed decision and understand how it will work with the cam, heads, and carbs. I don't personally think you will be wrong with either choice but it will have some effect on the engine, and every bit counts.
https://www.thesamba.com/vw/forum/viewtopic.php?p=7593428

[bgbugman72]

Barnfine my brain hurts after reading all that!
_________________
'72 Super Beetle.
'71 Bus
Wish I still had my '77 sunroof from high school.
78 vert for my wife

[Pruneman99]

You will definitely want "B" pistons with a 78mm crank or you will need huge shims and end up with a lot of fitment issues with the wider engine.

I mocked up my 76mm crank with "B" pistons and 5.5 rods. Got around .03 deck or so. Didn't have the cylinders locked down, just wanted to get an estimate.

There is a super handy deck height estimate chart floating around on here. It will put you in the ballpark for crank/rod/pin heights

[Alstrup]

[fivelugshortaxle]

For that displacement, I would go with a different cam. The 110 cam will make torque but die off quickly, and it is rough on the valvetrain. If you're looking to make a decent street motor with good power use the W120 cam. 9:1 compression. You won't be disappointed...you will be with the 110 cam
_________________
Good things come to those who wait.
2332 with lots of goodies....
Rotating assembly balanced by Brothers VW
4340 84mm crank
AA 94mm p&c' s
Total seal 2nd ring, rest are Grants
5.5 h beams
Magnum straight cuts
Steve Long XR310 on a 106
CB 1.4 rockers
CB Magnaspark 2 distributor
NGK D7ea plugs
A1 lowdown 1 3/4 with single muffler
Dellorto 48's with 40 venturies
Kennedy Stage 2 with Daiken disc

[Vanillagurilla]

You would see alot more gains going to 44s then going with the w120 with the 40s. Better yet the w120 and 44s.

[bgbugman72]

Thanks everyone, have a lot to think about. I'm also thinking about a 2110 instead. Seems to be what most people are building up. There is a lot more info on that motor than the odd 2007cc.
_________________
'72 Super Beetle.
'71 Bus
Wish I still had my '77 sunroof from high school.
78 vert for my wife

[Vanillagurilla]

That's because they dont call it a 2007 but just a 2 liter.