Instead of roller rockers, why not just build a setup for gear driven dual overhead cams? Now I just feel stupid for thinking of it . When will I leave well enough alone.... Lol.

I do like the reliability idea. Sounds like a good excuse to go for it myself. Are you going to record the specs for copy cats or let us figure it out the hard way?

 

Harland-Sharpe will sell them as a kit I'm sure. They already have the specs and are the ones that built them for Xcite and 78broncoIDI.

 

That would be cool.

 

Just tearing up the yard alittle bit.

 

That whistle is nuts sounds great man!!

 

Yeah it sounds good!

 

I thought alittle update was in order. My schedule has been hectic lately working 10-16 hours a day and only have been home maybe 5 days this last month.

The truck has been running extremely well and the performance is as I hoped it would be. Awhile back I added a thrust bearing to the imput shaft of the DB4 to address the associated problem of the shaft pressure pushing on the transfer pump. I tuned it to where the pump should be maxed out and has been running well. The pump was not ran on a stand so will have to wait till this winter when the pump is sent in for a check up to see where it actually is for output.

I have put several thousand miles on the truck already and can easily run the cruise control pulling in all conditions I have been in so far. The only problem so far is getting a cooling fan clutch that actually works properly. I have a known good clutch on its way so I can install it before heading out again the end of this coming week. Other unrelated problems have just been an agravation such as blowing a brake hose and the AC compressor taking a dump on me during the hotest day last week.

I have been able to easily pull in overdrive on the freeway and run 70-75 mph even pulling the camper in the wind only slowing down some to avoid damaging the camper in high winds. Boost is fast to respond and can easily get 10 to 12 lbs boost by 1800 rpms with out smoke if I ease into the throttle. When at crusing speeds going up the larger hills in eastern and central SD I easily see 22 - 28 lbs of boost with egts maxing so far around just under 1200 during a 95 degree humid day. Current timing is at 7.5 degrees havent had time to test other settings.

Transmission shifting is the best I can make it given the limitations of the stock computer. It was just not designed to be tuned to an engine with this much horse power, so I have had to just set it to get a middle ground I can live with. Hopefully will install an aftermarket controller this winter if time and money allow it. I have some other projects to do this winter also.

 

Sounding good man...

 

annnnnnd, that is just not fair!

 

During the last towing session I had a chance to do alittle playing around there was no traffic so started lugging the engine down to see what boost I could get down low with out much smoke. I was going up hills while checking this.

At 1500 rpms I was able to see 6-8 lbs with only light hazing of smoke any more than that and I was rolling black smoke.
At 1600-1700 I was able to get to 10-12 lbs and at 1800-1900rpms could easily reach up to about 15 lbs with a light haze.
After 2000 rpms I could easily go from 15-28 lbs of boost quickly with only light hazing and was not at full throttle at anytime.
Crusing the freeway at 75 is roughly about 2200- 2300 rpms for my truck.

 

How were your EGTs when you were doing that?
Rob

 

Between 1000-1150 deg approx weather was fairly cool out 70-75 deg max.

 

When do you have your water/meth kickin on?
i cant wait to get my build started.
Rob

 

I honestly havent even hooked it back up after putting the engine in it. Runs great with out it with plenty of power.

 

Before building this engine I was using it as a power adder but with the current power level and low egts havent even had the need to hook it back up so far.