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13b oldschool four port semi p?

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Old 01-21-16, 01:42 AM
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13b oldschool four port semi p?

I have a rx3 that I'm doing up.have a pair of oldschool repu rotor housings that have semi p's done to them,debating if I should just streetport the irons or do them bridge port.any one have done a bridge with semi p port?

car is going to be driven in the streets occasionally.
Also going to be running efi,thinking 62mm ITB's Ida style?
What size injectors you guys recommend?
I have a full s5 n/a rotating assembly that is going to be sent to get balanced and debating side race clearancing..also going to do all the engine oil mods I can possibly do with the help from you guys,open to opinions and advice so shoot away..
Just trying to get the best n/a horsepower out of these semi p rotor housings I have laying around.


I will post some pics of the semi p work done as soon as my photobucket is up and working again..
Old 01-21-16, 12:24 PM
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IMO race clearancing is more important than balancing.
Old 01-21-16, 06:14 PM
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Here some pics of the rotor housings before I had them resurfaced.



A side by side pic of before and after resurfacing.



Here they are done.



And the sleeve pressed in



Just got to fill in the side of the housings with some devcon aluminum putty
Old 01-24-16, 09:55 PM
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You have any details on the housing resurface process? They look fantastic!
Old 02-27-16, 03:42 PM
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any updates on this?
Old 03-17-16, 01:25 AM
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Looks like pics got deleted
Here we go again

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Sleeve pressed in

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Before and after resurfacing

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Old 03-17-16, 01:29 AM
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Havnt done much since I have 4 engines I'm building for friends.
Will get on it soon

Got a new racing beat Ida manifold that I'm going to have my friend modify for the semi p

Also the rx3 is a 74 but previous owner put a 72 front end on it so I bought a SP front nose and need to get a hold of the matching grill and headlight bezels for it.

Slowly but surely it will get there.
Old 03-17-16, 01:35 AM
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Won't be the first semi p I built
Have done a few lately

Here's pics of them

13bre for a rx2
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Here's another I did for a repu

13b





Old 03-17-16, 01:36 AM
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Double post

Last edited by turbo_dave; 03-17-16 at 01:39 AM.
Old 03-18-16, 08:20 AM
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What are you doing for epoxy around the pport inserts? Looks very nice.
Old 03-18-16, 09:38 AM
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I Used devcon aluminum putty
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