Jump to content

j13 rebuild


Recommended Posts

So I've been getting my engine rebuilt for a while now. I want to get everything on this engine to perform as well as it can. With that said. Do any of you guys know of anyone who would make a custom exhaust manifold? Ive got a rebuilt j13 and I want to add a turbo, but I'm not sure what size turbo would be best for it. (Not sure if the size of turbo would make a difference on how the manifolds made). I don't have any pics of the engine on me so I can't add the pics yet, but I will as soon as I can.

Link to post
  • Replies 5
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

I would be very cautious with that. The J13 only has 3 main bearings to support it. The L series and the A series after it all had 5 and the crankshafts are well supported. The J13 is a great little engine and like the old VW bug were impossible to blow up because they didn't make a lot of power. If wanting to keep this car engine original I would try to find a J15 and there was even a J18 put in Nissan vehicles in Mexico. I think the Mexican 510 had J series engines. Engine swap? An L20B is over 90 hp.


If the engine is practically finished I would just add a slightly larger carburetor and enjoy it.

  • Like 1
Link to post

I think the Weber 32/36 is slightly large for an L20B although it will work, almost certainly a J13 is too small for it. You should never run too large a carburetor. An A14 or L16 carburetor would be good but it most likely won't bolt on and an adapter would need to be made. Is the J13 a linkage or cable to the carburetor? If you have no fabricating skills stick with what you know and run it stock.

Link to post
  • 2 months later...

When I was in high school in the late 70s, I ran a PL411 with a 2 barrel Weber. It bolted right on. I don't remember the model, but just to let you know that it is the best mod for the J13, I think. The problem, I found, was the linkage. You have to custom fab that. That took the longest as I had a shop do it. It was far too expensive and took forever. I'd say, make friends with a shop that is willing to do this for you if you are not good at that sort of stuff.

Link to post

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

By using this site, you agree to our Terms of Use.