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pstzortzis
Samba Member
Joined: July 15, 2018
Posts: 8
Location: GREECE
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 Posted: Mon Mar 17, 2025 7:46 am Post subject: AT type 4 engine questions . Any info? |
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So i just got this engine out of a bus. It is AT coded has 2x solex 36 40 pdsit.
Does anybody know its specs? does it have bigger valves? Are they reliable?
i have read that it be out of a 412s but not really sure about it.
If anybody has the same or similar engine i would like to hear a review and if its worth installing it into my bug.
Last edited by pstzortzis on Tue Mar 18, 2025 12:33 am; edited 1 time in total |
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KTPhil 
Samba Member
Joined: April 06, 2006
Posts: 35704
Location: Conejo Valley, CA
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| Posted: Mon Mar 17, 2025 8:49 am Post subject: Re: AT type 4 engine questions . Any info? |
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Unless it's a baja, your Bug can't fit this engine.
_________________
Current Fleet:
- '71 Fastback
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Retired:
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Glenn
Mr. 010
Joined: December 25, 2001
Posts: 79250
Location: Sneaking up behind you
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| Posted: Mon Mar 17, 2025 8:51 am Post subject: Re: AT type 4 engine questions . Any info? |
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| KTPhil wrote: |
| Unless it's a baja, your Bug can't fit this engine. |
Tim in 3...2...1...
_________________
Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
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עַם יִשְׂרָאֵל חַי |
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pstzortzis
Samba Member
Joined: July 15, 2018
Posts: 8
Location: GREECE
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| Posted: Mon Mar 17, 2025 8:57 am Post subject: Re: AT type 4 engine questions . Any info? |
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| Forgot to mention i got the joe cali upright conversion book and also i do home metal fabrication so fitting the engine wouldn't be a problem |
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raygreenwood
Samba Member
Joined: November 24, 2008
Posts: 23016
Location: Oklahoma City
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| Posted: Mon Mar 17, 2025 9:04 am Post subject: Re: AT type 4 engine questions . Any info? |
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Ah!
You do not see any of those here in North America!
The AT series was European only for 412 cars. It is a 1.8L. The heads, case,crank, valve sizes and everything else is the same as the fuel injection models of 1.8L that went into VW 412 and porsche 914......except.....that it has either flat topped pistons (instead of dished pistons) or it has domed pistons. It possibly has a different/better cam as well.
It is a high compression, higher hp version of the 1.8L that only came in Europe and only with twin carbs. Nice engine!
Ray |
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pstzortzis
Samba Member
Joined: July 15, 2018
Posts: 8
Location: GREECE
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| Posted: Tue Mar 18, 2025 12:21 am Post subject: Re: AT type 4 engine questions . Any info? |
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After opening valve covers I figured it out that it has these heads with 41x34 valves.
Is it the 75hp or 85hp model?
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wagen19
Samba Member
Joined: November 16, 2007
Posts: 565
Location: germany
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| Posted: Tue Mar 18, 2025 5:59 am Post subject: Re: AT type 4 engine questions . Any info? |
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| pstzortzis wrote: |
After opening valve covers I figured it out that it has these heads with 41x34 valves.
Is it the 75hp or 85hp model?
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AT = 75 hp, 412 only
AN = 85 hp, 412 and 914, both engines Europe, with 2 carbs
The casted in number should be 021 101 371 S
No EGR ports.
EV 41 mm, AV 34 mm |
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