TheSamba.com :: View topic - novice: can you fit type 1 parts to a 1720cc 912 engine

Fri Apr 04, 2008 8:32 am

just bought my first 912 (67 model 1720cc). as a novice i need to ask some :? questons.
Is the engine the same as a type 1.
Can i use type 1 parts on the 912engine. such as the startermotor, dizzy, exhaust.
Also could i fit weber idf twin carbs plus a type 1 manifolds to the 912 engine. and can get brakes pads for the front. wheres the best place to buy service parts.

Fri Apr 04, 2008 11:42 am

dirty_rat wrote: just bought my first 912 (67 model 1720cc). as a novice i need to ask some :? questons.
Is the engine the same as a type 1.
Can i use type 1 parts on the 912engine. such as the startermotor, dizzy, exhaust.
Also could i fit weber idf twin carbs plus a type 1 manifolds to the 912 engine. and can get brakes pads for the front. wheres the best place to buy service parts.

912 engine is a totally different animal, little to no interchange with a VW if you want it to run like a Porsche and not a VW. You can run a VW engine in a 912, a lot of guy's do, both type 1 and type 4, but in the case of the type 1 it sort of defeats the purpose of owning a Porsche, doen't it?
--Dan

Sat Apr 05, 2008 2:07 am

thanks. my idea is to run 1776 engine in the porsche and strip and rebuild the 912 engine. any special requirments in fitting a type 1

Mon Apr 07, 2008 5:18 am

Braukuche wrote: 912 engine is a totally different animal, little to no interchange with a VW if you want it to run.
--Dan
Fixed it for you... :wink:

The one VW part I've seen people use on a 912 (or 356) engine is the 009 distributor. My advice, don't do it! The 009 only has about 20 degrees of mechanical advance, which isn't enough for a 912 or 356 engine. To get your high speed advance where you need it you have to set the static at 10-15 degrees. This is also a bad thing, unless you're building a race engine that'll be spending very little time at idle.

Mon Apr 07, 2008 8:17 am

denizen224 wrote: Braukuche wrote: 912 engine is a totally different animal, little to no interchange with a VW if you want it to run.
--Dan
Fixed it for you... :wink:

The one VW part I've seen people use on a 912 (or 356) engine is the 009 distributor. My advice, don't do it! The 009 only has about 20 degrees of mechanical advance, which isn't enough for a 912 or 356 engine. To get your high speed advance where you need it you have to set the static at 10-15 degrees. This is also a bad thing, unless you're building a race engine that'll be spending very little time at idle.

The 1968 912 engine in my '58 356 coupe is running a 009. I have not had any problems yet. Had this engine for 3+ years 50,000+ miles. Not sure if that is an anomoly or not. Just my experience with the 009.

Mon Apr 07, 2008 9:19 am

i know about the 009 but every one in the uk except me thinks there great. even the uk ddk porsche forum thinks the 009 are good :shock: .
ive got a couple of 010 and 019 dizzy lying about. might try them out.

the reason i was asking is. i've just bought my first 912. and have been looking at ways to keep my running cost's down. the last guy had troubles with the engine and it cost big bucks. it runs ok at the moment.
so any furture trouble. then im going to fit my spare type 1 1776 into it. and save for a decent type 4 rebuild. im going to pull the 912 out this summer and try the type1 1776 as a comparison

Tue Apr 08, 2008 5:16 am

mpribanic wrote: The 1968 912 engine in my '58 356 coupe is running a 009. I have not had any problems yet. Had this engine for 3+ years 50,000+ miles. Not sure if that is an anomoly or not. Just my experience with the 009.
Oh, it'll run with a 009, it just won't run as well... :lol:

What are your static and high speed advances? Static should be ~5deg BTDC, high speed ~32-35deg BTDC. Everybody sets the static timing but few think to check the high speed.

dirty_rat wrote: ive got a couple of 010 and 019 dizzy lying about. might try them out.
I'm not that familiar with the curves for these. Again, be sure to see where your high speed advance is located. Best would be to find a good 022 or 031 dizzy as originally spec'd for these cars (or have a good core rebuilt). The 050 is also a decent dizzy for a 912. It has plenty of advance, having originally been designed for Brazilian VWs running high ethanol. The advance curve isn't shaped quite like an 022 or 031 (the 050 is a straight line, the 022/031 is humped), but it's better than any other VW dizzy.

Tue Apr 08, 2008 9:05 am

8) to be honest dont know whats the advance is.
static is 7.5 deg btdc on the 010. i know there are popular with vw engine builders.

http://www.type2.com/library/electrip/bosch009.htm
http://www.oldvolkshome.com/ignition.htm#A4954
http://www.glenn-ring.com/bosch/

Sun Apr 20, 2008 6:17 pm

dirty_rat wrote: 8) to be honest dont know whats the advance is.
static is 7.5 deg btdc on the 010. i know there are popular with vw engine builders.
7.5 deg is more of a VW static advance number (depending on the specific engine/build), 356/912 should typically be a little less (5 deg). The amount of advance you set should be dictated by the engine you're timing, not the distributor used. You can set an 010 for 5 deg static, the question then becomes where does your high speed advance leave you and what's the shape of the curve? High speed you can figure out with a timing light (esp. if you have a gaged pulley), curve shape you'd have to take the dizzy to somebody with a Sun distributor machine.

Thu May 29, 2008 10:43 am

One man's saga...

http://mysite.verizon.net/res890fb/