30 hp engine build

[mr horsepower]

Hello loungers
I am  rebuilding my uncles 1956 splitvan engine
And was wondering how i can get the cr up a smal amount
It is now 6.6
Is there an easy way so that it wil remain stock engine but with a little more
To say on the highway
He is going to drive it to spain in august there his daugter will maried in it
So it has to go 5000 km and a little more torque is welcome
Who can help me .
Gr henri

Gr

[besserwisser]

I flycut the heads 2.5mm and change the valves to 35 intake and 30 ex. Also put dual carbs 34pci from BMW 700 and Citroen. I have also built a few with cranks with counterweights and 74 stroke. Horsepower is around 65-70hp. I have built one with 9.2 compression but with a camshaft redone by JPM and dual 34pci.

[mr horsepower]

Sounds verry nice
But this van has to be stock
But i want to get the best out of the stock engine as it is
With stock parts
Gr

[Torben Alstrup]

The stock engine can benefit from a raise in CR alone. If memory serves a 2,5 mm flycut raises the Cr to about 7,5 -1. Run 95 octane and rejet. That will increase torque with about 10% and give him a couple of extra hp.

T

[mr horsepower]

That sound good Torben .
How does that mod goes with the pushrod length
How do i solve the increase of length ?
Gr

[mr horsepower]

Hello
The heads are getting new guides valves and seats .
And also a flycut to raise compression.
 I did not decided howmuch the cut wil be.
As i am concerned with the  valve geometrie
Unlike on the type one this engine has the rockershaft clampt on a U boss
Was thinking to cut a   copper pipe and slice it in halve to get it under the shaft.
Any ideas ?

Gr henri

[modnrod]

That pipe idea would work.
You could also machine it flat, then either try to adapt T1 rocker assy, or make some new rocker shaft U-mounts to take stock setup, sorta like M/bike bar mounts.
https://www.google.com.au/search?q=bar+mounts+mx&espv=2&biw=1578&bih=1018&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwi0t8Pw79TKAhVj5KYKHXUnA2wQsAQIOw#tbm=isch&q=handlebar+mounts+mx

[cedric]

You can buy adaptors to fit newer type of pushrods..
http://www.thesamba.com/vw/classifieds/detail.php?id=1880205

[mr horsepower]

The engine did his job good

Went 2600km to spain and they got married on 1700 today.
My uncle is a happy man .
And should return next week
The engine did 13km on one liter avg.
And can do 90 kmh al day in the spanish heat
Not an issue at all
Not bad for a 1956 vw .

Gr henri

[mr horsepower]

Yes