http://www.davessmallbodyheis.com
i found this over at the Hamb. would this be the same as the D.U.I. system.
i found this over at the Hamb. would this be the same as the D.U.I. system.
fordconvert":2y2xtfl6 said:I imagine both companies are going off the same concept, which is to modify and properly build (or build from scratch) the HEI's to fit other motors. The only HEI's that were prone to some problems were the last generation before the current one (starting in 96 i think) The cap was a flat crab like thing were the wires came off in line in the physical order of the motor rather than the firing order. This version was prone to cross fires. The coil in cap was in almost every car and truck (except some 4 cylinders) from 74-86. The small cap was in everything 87-95 except for the LT1's with the optical setup.
The important factor if you are going to be paying big bucks is to make sure they are quality parts that are properly set up and tested for your application. Typical parts store new and rebuilt models are marginal quality as far as bearing fit and such and you never know what you are going to get for curves.
jamyers":1okphmgr said:NOT the same as D.U.I.
Like me, he HATES the GM in-cap coils because they overheat and start misfiring above 4500 rpm. There are 2 causes to that: 1. epoxy-filled coil, and 2. it's buried inside the cap with no ventilation. GM knew this for years, but since few oem cars stress their ignitions that much, it wasn't a big deal - more than offset by production / maintenance concerns.
primal1":1ntyc2ws said:just thought i would share this to those that can't afford the D.U.I. systems. it sounded to me like they are similiar
Bort62":ipjeaafa said:primal1":ipjeaafa said:just thought i would share this to those that can't afford the D.U.I. systems. it sounded to me like they are similiar
It is much more similar to the duraspark than it is to coil-in-cap DUI
Yup, I don't think you can beat it until you get up into the full-race high-rpm or maybe nitrous world. Even then...Bobscoupe":3p5p780n said:The DSII system is the cheapest and best way to go for electronic ignition in my opinon. Add a MSD 6A box and it's great.
Bob
primal1":3tpbz9sw said:then whats in the D.U.I. that makes so much more power.