318 draw through build

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Bakerlite

Bakerlite

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First of all before I post anything, I'd just like to thank bohica2xo for his help with this project. Thanks man!
OK, to start with, this build will be based on the the Martin system from back in the 80's. Really I think it's a great way to turbo your car. The carb stays pretty much in it's original location but will sit about 3 inches higher than it normally would.
I am posting some pics here of the chamber that will connect to the turbo.
The bottom of the chamber has reed valves to bypass the turbo when there is no boost,so the car will drive as if there is not turbo fitted. Once boost starts to rise the reeds shut and boost is supplied. No turbo lag.
The manifold will be modified so that the turbo output goes under the base plate.
I have the reed valves on the way as well as some block hugger headers. I won't modify the bottom plate until the valves arrive. When the headers arrive I'll mate the turbo to them. Until then there is not much else to do accept add a fitting to the base of the intake manifold.
I'll post more pics as I get more done.
Sorry but for some reason my camera decided to take blurry shots.
 

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Intake exhaust crossover welded and ready for inlet tube hole to be cut and tube to be welded in.
The space underneath will be plated and welded up so water etc wont get in there.
 

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Bob. the intake charge goes out of the carb, through the alloy box I'm making ( not finished yet) then through the turbo and into the side of the intake manifold, where I am yet to make a hole. Here's a mock up with some cardboard of the tube going back into the manifold.
 

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Nice work Bakerlite.

Nice to see the old Martin system come back to use. It was always a smooth system on the street.

The RHD thing did throw me for a minute though.

B.
 
Thanks, I was going to take some pics the other day but I didn't get a chance to do any work on it. I'll post some updates by the end of the week.
 
Others are watching, LOL.................................
 
Here is what it's going into. This car is also in the shop getting tidied up a little. Wheels are being polished , small rust repairs,paint is getting cleaned up as well as some interior work.
 

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Here are some pics of the modified block hugger and turbo.
 

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So, is the exhaust turbine only running off of two cylinders? Or am I over looking something on the headers?
 
connerray said:
So, is the exhaust turbine only running off of two cylinders? Or am I over looking something on the headers?
Click to expand...

All headers are joined together, and exit the turbo. That included the right bank as well.
 
I don't understand. Does this mean a blow through carb is not needed and the air is forced under the carb into the intake?
 
Bakerlite said:
All headers are joined together, and exit the turbo. That included the right bank as well.
Click to expand...

So all cylinder from the right bank blow exhaust gas into the front and rear exhaust ports on the left bank.... Where exhaust gas is also trying to get out?? And the turbo is only driven off the 2 centre cylinders on the left bank? Won't that just choke the engine to death like blocking the exhaust.

Excuse the ignorance but I've never seen a setup like this! I can clearly understand the draw through (cold side) but the exhaust has me baffled.. No pun intended
 
mopardart72 said:
I don't understand. Does this mean a blow through carb is not needed and the air is forced under the carb into the intake?
Click to expand...

on a draw through set up the carb is set in front of the turbo so it must suck through the carb

on a blow though set up the turbo forces air into the carb

as you said there is no need for a for a blow through carb since it is not pressurized

his set up confused me at first too but i believe the bottom plate of the carb spacer is sealed and the square looking out let feeds the turbo inlet and the pressurized outlet feeds the intake which is the pipe he welded in the side of the intake if there was no block off plate at the base of the adapter the boost would blow out the carb and do nothing
 
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