TheSamba.com :: View topic

Sun Aug 03, 2014 6:42 pm

I have the following basic parts, all of which point to a single port 1776 but I'm at a point where I can make changes and/or sell things off to fund new ones if I'm on the wrong track.

My one big limitation is that I want to keep stock heat so heater boxes are a must! Also, I really like Kadrons with single port heads but I don't know if that's the best option for a camper. It's my first one! Anyway, here are the significant parts............any input would be welcome!

69mm c/w crank
Stock flywheel
Single port heads
90.5 p/c's
dual Kadrons and single port intakes
1 3/8" header
Stock heater boxes

Sun Aug 03, 2014 6:59 pm

Having a single port Balanced engine for your 70 is ideal for a long
lasting engine.

balancing is key.

Sun Aug 03, 2014 7:18 pm

there are big heater boxes if you want to go big. 1776 should be fine with the stock less than 1 3/8 boxes.

I will disagree on single port, but some people swear on them having a better low end.

I've been reading that if you want to go big, get a 2110. 1 1/2 heater boxes are available.

Sun Aug 03, 2014 7:25 pm

My only suggestion would be to use a camshaft that can take full advantage of the dual carbs grunt down low and to get the kads tapped for use with a SVDA.

Sun Aug 03, 2014 7:46 pm

I agree with randy. When you build an engine all the parts need to work together with each other. I don't believe there is such a thing as bolt on performance.

Mon Aug 04, 2014 3:31 am

I've driven a bug with 1 1/2" heater boxes in the Northeast winter and the heat wasn't so good since they're just a j-tube inside the heater box skin. I figure with a bus the heat will suck with those boxes which is why I want to stay with stock.

I already have an SVDA and a proven pair of Kadrons which are SVDA ready. I don't object to dual port heads, but I didn't really like Kadrons on them. I found them fussy and much harder to tune to a smooth idle below 1000rpm than on single port heads. I want to use my carbs and distributor because it'll help me manage build costs and spend my money on an excellent dynamic balancing job, full flow oil system, etc.

A couple more questions:

--For the cam, would this CB Performance "cheater" cam be good? I want to be easy on the valve train and not have to do dual springs and this one just requires "hi-rev" springs which I guess means HD singles. If not this cam, what's another?

http://www.cbperformance.com/ProductDetails.asp?ProductCode=2280

--If doing a stock flywheel and c/w crank, then what pulley to use? Stock?

--Would it be possible to get a BN4 gas heater in the engine bay with single port Kadrons? Or is a BN4 not compatible with dual carbs?

Mon Aug 04, 2014 7:06 am

Stay stock. (Unless, of course, you have buckets of money to rebuild everything again after you ignore our advice.)

Good advice:
"Having a single port Balanced engine for your 70 is ideal for a long
lasting engine."

"When you build an engine all the parts need to work together with each other. I don't believe there is such a thing as bolt on performance."

Listen to wisdom. Not to the advertisements from Hot VWs Magazine.

Mon Aug 04, 2014 7:20 am

static wrote: Stay stock. (Unless, of course, you have buckets of money to rebuild everything again after you ignore our advice.)

Good advice:
"Having a single port Balanced engine for your 70 is ideal for a long
lasting engine."

"When you build an engine all the parts need to work together with each other. I don't believe there is such a thing as bolt on performance."

Listen to wisdom. Not to the advertisements from Hot VWs Magazine.

I'm not intending to ignore anything! I took

"Having a single port Balanced engine for your 70 is ideal for a long
lasting engine."

To mean that a single port 1776 was a good idea so long as all parts are balanced and I fully intend to get everything balanced regardless of engine size! I also have a 30 PICT 2, a single port intake manifold, and a 205M distributor if it turns out that stock is the best way to go, as you're suggesting it is.

Mon Aug 04, 2014 7:32 am

I still llike the c/w 1776 SP with the small dual carbs and the SVDA.

It should be pretty robust ovwer the long term and econimical to drive with a little more grunt than the stock set up.