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Author Topic: engine rebuild  (Read 12698 times)

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marcr1

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engine rebuild
« on: July 14, 2009, 03:54:53 pm »

              My 1600 dp with an ae engine stamp has  blown a cylinder. i have decided to do a rebuild with
                  the larger cylinder and make it a 1776.
                  Do i keep the original 34/3 carb or put on the dual 34mm solex that i picked up last summer
                   and have not used yet.

                                    In everyones experience what would the difference be if everything else is stock.


thanks
marc
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matt

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Re: engine rebuild
« Reply #1 on: July 14, 2009, 07:01:46 pm »


 That's me,

 have a 1776 with stock carb, &  stock muffler system & 009

Stock carb is easy to maintain, just want say it works -

Runs fine, but with better carbs, would get more power, I will upgrade to better carbs someday, but not now..

Put on the duals if you can


More power than 1600 for these Pa HILLS!  drive&&

 - thought the cylinder holes in the block have to be made bigger............


Matt

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1955 3-fold semaphore Oval beetle
1971 Convertible beetle
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Hard times create strong men. Strong men create good times. Good times create weak men. And, weak men create hard times.?
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marcr1

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Re: engine rebuild
« Reply #2 on: July 14, 2009, 07:29:55 pm »

                               My mechanic is taking care of it.  i am going to try and get some time off so i can watch and help with the rebuild.

                                 do you get on the highway often.   i am looking for a little smoother ride on the highway. smoother meaning i can keep up with traffic.                               
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Baha (Shawn)

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Re: engine rebuild
« Reply #3 on: July 14, 2009, 08:56:32 pm »
My  2CENTS (oversimplification to keep it short)

Carb + Carb doesn't necessarily = Higher top speed

Single carb is fine for 60+ mph.

Adding a second carb will increase torque (bottom end) and help you get to max RPM faster, help maintain speed going up hills, but won't do much to change top end (fastest speed).

Lightening the rotating weight and ballancing moving components in the engine will give you higher top speeds.
(so will higher gear ratios in the trans, and larger tires but at a cost somewhere else in the power band)
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njgt-1

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Re: engine rebuild
« Reply #4 on: July 14, 2009, 09:24:50 pm »
Quote
Do i keep the original 34/3 carb or put on the dual 34mm solex

Any engine will run on any carb but the smaller carb on a larger engine will act as a governor and your engine will be limited on how much power and RPM range it will produce.

If your goal is a smooth and powerful engine then the duals will be a better choice. Just remember "what goes in has to come out". Consider other upgrades like heads with bigger valves and a cam such as an Engle 100 or Scat C- 25. these are milder cams that allow the valves to open more and stay open a bit longer than stock this allowing the engine to "breathe better" or use that extra gas those dual carbs are pumping in. It goes without saying that you should also consider a basic header type of exhaust, this will allow the burnt gasses to exit quicker and allow the engine to breathe even better.

As others have said be sure your builder is balancing everything and you might want to take the info from this board and see what he says.
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Ben Franklin

matt

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Re: engine rebuild
« Reply #5 on: July 14, 2009, 09:37:51 pm »


                 For my setup, 70 mph is no prob.




     Rabit266


M
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1955 3-fold semaphore Oval beetle
1971 Convertible beetle
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Hard times create strong men. Strong men create good times. Good times create weak men. And, weak men create hard times.?
― G. Michael Hopf

marcr1

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Re: engine rebuild
« Reply #6 on: July 14, 2009, 10:13:18 pm »
thanks guys. i was looking to keep it simple.  guess i will look into a new cam and see how much that will set me back. might as well do that now.
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Baha (Shawn)

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Re: engine rebuild
« Reply #7 on: July 15, 2009, 08:15:02 pm »
Very well put Bob.


The Volkswagen University Library in Berlin. Today it was renamed
"The Bob M------o Presidential Library."    Finally
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marcr1

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Re: engine rebuild
« Reply #8 on: July 15, 2009, 10:54:43 pm »
seems my mechanic either reads these boards or he spoke to bob and matt.

                          I  will keep the 34/3 carb until i am ready to make all the other changes.

                            looks like my next day off is going to be for the show at flanders.  hope to see ya all there.

                                 
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matt

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Re: engine rebuild
« Reply #9 on: July 16, 2009, 08:36:23 am »



 Be good to see ya!


M

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1955 3-fold semaphore Oval beetle
1971 Convertible beetle
1977 Westfalia, FI,  Berlin interior

Hard times create strong men. Strong men create good times. Good times create weak men. And, weak men create hard times.?
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njgt-1

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Re: engine rebuild
« Reply #10 on: July 16, 2009, 10:32:18 am »
Quote
I  will keep the 34/3 carb until i am ready to make all the other changes.

not a bad isea,

Sign on the wall of a Speed Shop:

Speed Cost
 d-s How fast do you want to go ?  d-s
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Re: engine rebuild
« Reply #11 on: July 16, 2009, 10:37:45 am »
Quote from: njgt-1 on July 16, 2009, 10:32:18 am
not a bad isea,

Sign on the wall of a Speed Shop:

Speed Cost
 d-s How fast do you want to go ?  d-s


Speed = Cubic Dollars
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njgt-1

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Re: engine rebuild
« Reply #12 on: July 16, 2009, 12:05:13 pm »
Quote
Speed = Cubic Dollars


you're right any time you set a budget just Xs it by 3 !
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Mikecoast

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Re: engine rebuild
« Reply #13 on: July 16, 2009, 12:43:31 pm »
If memory serves me ... Dr. Bob & I did exactly that on my motor rebuild ... Engle 100 cam, Dual Solex Carbs, counter weighted crank, header, single quite pack muffler ... and lots of other cool stuff. Quality parts aren't cheap!

The best part of my Super Beetle Vert is that motor!
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Celly

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Re: engine rebuild
« Reply #14 on: July 16, 2009, 09:51:52 pm »
Quote from: Mikecoast on July 16, 2009, 12:43:31 pm
If memory serves me ... Dr. Bob & I did exactly that on my motor rebuild ... Engle 100 cam, Dual Solex Carbs, counter weighted crank, header, single quite pack muffler ... and lots of other cool stuff. Quality parts aren't cheap!

The best part of my Super Beetle Vert is that motor!


and the BUS still runs better LAUGH@ LAUGH@ LAUGH@
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