Published 2009
Stroker Carb Linkage and Intake Mods
S Allen
Several people have asked me how I did the linkage for my 2 liter carb install on the stroker. I thought it would be easier to just do a short write up with some pictures. Hopefully this will answer any questions you might have. If I missed something, just ask and I will try to answer you.
I have heard reports that some have had the chokes reversed on the 2 liter carbs to mount them on the 1600 intake. This is not the case with my method of modification. Others have used the 1600 carbs on a stroker with some success. I prefer the 2 liter carbs and bigger is better when it comes to feeding the stroker fuel.
First off, hogging out the intake can be accomplished fairly easily. I use the 2 liter spacing blocks as jigs to remove the excess material from the carb side of the intake. Here is a picture of a stock 1600 carb with a 2 liter spacer block on it. You start at the front and taper it towards the back. I used a Dremel.
This is the intake with much of the material removed. I still need to clean it up a bit before it is ready to go.
Here it is again with the 2 liter spacer block set in place. Getting closer. As you can see this part is pretty easy. That explains hogging out the intake.
I put a PCV valve in the intake this time around. The first time I tried just putting a K&N breather filter on the vent on top of the valve cover. No good as I developed severe pressure within the engine which can lead to leaks out of the rear main for one. I used a foam ITG air filter the first time as well. I finally plumbed the inside of the ITG similar to the stock air filter. I then hooked the vent coming off of the top of the valve cover to this. It works great. This time I put a PCV valve in the intake so I can connect direct to it. I plan on using the small round chrome K&N air filters that fit on a Z car this time around. I actually had them on the first engine but they are so small there was no way to connect the breather coming off of the valve cover to them. This should work out great.
Here is a good shot of the stock 1600 carb linkage setup. Notice there are two links-one for each carb on the 1600. My modification requires just one to run both 2 liter carbs. Less moving parts is a good thing.
Next comes the modifications to the rod carrying the linkage. Remove the throttle cable linkage and then the front and rear carb link connections. You can now slide the entire rod from its bushings on the intake. You will notice from the picture below that we will be cutting off 3/4" from the front of the rod and 7/8" from the rear. You could leave it stock but it will appear to be sticking out on either end. Next take either the front or rear carb link connection which we will place approximately 1/2" from the throttle cable linkage. We can now slide the rod back in from the front putting the throttle cable linkage back on as well as the carb link. Slide the rod all the way in place and tighten up the throttle cable linkage. I find it best to line the new position of the single carb linkage up with the 2 liter carbs in place. Once you are sure you have it right, mark the carb link and drill a new hole in the rod. Install the carb link with a bolt.
Here is a shot of the modified linkage installed with the 2 liter carbs. The single carb link works great and looks good too!
Here is another shot of the modified linkage without the 2 liter carbs. It just gives you a better perspective of the modifications.
That covers the modifications required to the intake to adapt 2 liter carbs for more go juice. Good luck and get the most out of that stroked motor.