Tuning Street Demon carb
MopaR&D.
The TQs work fine, but you have to adjust them properly, using the factory specs as a starting point. One of the TQ benefits can also become a headache: the large number of adjustments.
- the mech linkage that raises the met rods out of the jets. No other carb that I am aware of had this feature from day one. It means better throttle response because enrichment fuel starts flowing BEFORE the vac drop effect has time to act.
- sec adjustments. You have the air valve spring adjustment; AV dashpot rod adjustment; WOT position of the AV. If these are not adjusted properly, you can get bogging. That is not the carb's fault, that is the tuner's fault. However, these adjustments can be tweaked to improve performance. That is one of the great things about the TQ, the number of things that can be changed. Another one is the WOT position of the sec throttle blades. Because they are so large, they can have a noticeable affect on distribution & WOT power.
If you want to get a TQ & put a kit in it, you can PM me & I will give you some tips on further tuning. best to get a 6000 series. They might be 45 yrs old, but rarely are they unusable & unless badly corroded.