78 replies to this topic

[CRXer87hf]

I'm glad you figured it out! That has to feel pretty rewarding.  Car looks clean too!  I would at least put some mesh in the trumpets to keep the bigger stuff out of your intake.  Congrats.

[spuker1]

Thanks, I'm really trying to make it as neat as possible. I have to tweak the linkage bracket so it looks nicer and also order new silicon joiners and make neater job out of that. I will put an airbox or a sausage filter on those too and meanwhile I won't be driving the car too much. I will probably drive it to one more meet and then I'm taking it off the road for the Winter. Also not worried about bigger stuff getting in as The trumpets are right at the back about 2cm from the firewall so it's not very likely. And even if someone went in there I don't think it would go far as it's not like things getting sucked in by Independed Throttle Bodies with injection. It would have to go past the diaphragm slide going up and down quickly and then past the needle itself.

[Davidov]

Did you end up going up on jet size?

[spuker1]

I went up and down several times mate. I've started off with 95 and that was way too small so I went up to 125. Those were still too small so I went for 150. The car was running still very lean on those, so I took those 125 jets and drilled them all the way up to 200. On those the car was pretty much undriveable bogging down with fuel and it was still very lean on low throttle. In the end I went back to 150 jets and started to tweak the intlet and main jet needles and air screws. Air screws went out a bit, lifted needles a bit (there was some experimenting there as well, as my carbs don't have needle height adjustment. I had to improvise) and also installed trumpets for extra airflow. It's spot on right now although I'm driving about without any air filters.

It doesn't bother me too much as the car does about 20-30miles every two weeks or so, it probably won't have too many chances to suck bad stuff up.