'Pop's Engine' another 440 on the dyno.

-
Awesome intake comparison. Sure is eye opening,Thank You.
 
airwoofer said:
Those lifts in the .100- .300 range look excellent considering the valve size. Beats my Indy CNC's!
Click to expand...

Don't worry about your lifts there. The dyno tests we're doing right now are shattering some myths. You'll be fine.
 
IQ52 said:
Don't worry about your lifts there. The dyno tests we're doing right now are shattering some myths. You'll be fine.
Click to expand...

More like turning myths into lies.
 
longarm said:
You could post up some of your work with documentation so
we can compare what you've accomplished to what
these guys are finding on a bench and dyno.
Click to expand...

I don't understand your statement. Mine was a statement of complete agreement of what's being done.
 
RustyRatRod said:
I don't understand your statement. Mine was a statement of complete agreement of what's being done.
Click to expand...

Sokay RustyRob, I knew what you ment.

And this otta tickle yer funnybone. I'm gonna put solid lifters on the hydraulic cam. Whattaya think about .004" lash hot?
 
I misinterpreted your statement as being in
disagreement with what is being done and the
results as being bogus.
For that, my apologies if I have take your comment out
of context.
 
IQ52 said:
Sokay RustyRob, I knew what you ment.

And this otta tickle yer funnybone. I'm gonna put solid lifters on the hydraulic cam. Whattaya think about .004" lash hot?
Click to expand...

Might be Purdy interestin.
 
IQ52 said:
I'm gonna put solid lifters on the hydraulic cam. Whattaya think about .004" lash hot?
Click to expand...

It will give the upper rpm power a boost. .004", and you could never get away with that using aluminum heads, might be a bit hard to start when its cold LOL
 
................I have put hyd lifters on a solid cam a few times............I also varied the preload and lash to see if there was much difference.............kim.....
 
But have you put solid lifters on a Hyd. cam?
 
We put solid lifters on a 509 cam in a low compression 383 10 years ago. The engine was for a demo derby car. It went through a few derbies and then my son needed an engine for his 66 Coronet station wagon, in went the 383 with the 509. We ended up at Mopars At The Strip and they had a chassis dyno there. Curiosity got the best of Cody and he put the Coronet on the dyno. 300 HP and 330 LB-FT to the rear wheels. Not to shabby for a demo derby engine.

So Pop's engine is back together with the 1.81 exhaust valves and the solid lifters on the XE285HL cam. We broke in the new lifters and have put back in the inner springs and are ready to dyno tomorrow morning. Boy does the valve train sound better with the solids in there.

It's been so long since I put solids on a hydraulic I didn't want to have too much lash and wipe out the cam during break in, so I set the lash at .005" cold and kept an ear out for strange noises. Sure enough right at the end of the break in you could hear an occasional pop out the exhaust. The exhausts were just barely hanging open and the intakes were right at zero. They're set at .011" cold now, so we'll bring her up to temperature tomorrow and quickly check the lash before we make a pull to see what we've got.
 
I'll post some dyno results as soon as I get some free time. But for right now we got roughly the same horsepower and torque increase from just going to a 1.81 exhaust valve w/ the increase of flow as we did when we changed to the M1 intake and the 2" spacer. Again, we went back to the Performer RPM intake and added 1.81 exhaust valves to the 346 heads and the increase was about the same as using the M1 intake with the 2" spacer.
 
On the 346 heads, did you keep the Humber Hump on the intake port wall, or reduce it, or grind completely away if there was enough wall material to do so?
THANK YOU for taking the time to post all your detailed "pops" build info.
 
txstang84 asked how much duration I lost with running solid lifters and lash on the hydraulic cam. His answer was, 3 degrees, the intake duration went from a measured 242 degrees at .050" to 239 degrees @ .053". This was using .005" hot lash with a 1.6:1 rocker.

Yes, solid lifters stabilized the valve train enough for us to wind it to 6100 rpm where I shut it down. The engine combination was losing power so there was no sense to go higher, it had dropped from a peak of 517 HP @ 5400 rpm to 498 @ 6100 rpm.

What Humber Hump?
 
Most surface features like that help keep the flow near the wall... I leave them but that's not an area I'd normally work heavilly anyway. They are similar to the feature shown in the intake port Chad posted on the head porter thread. No clue who Huber was though...lol.
 
We are ready for some more pulls. 346 heads now flowing,

.100...........81/60
.200.........158/125
.300.........210/176
.400.........247/211
.500.........274/232
.600.........295/248
.700.........303/257
 
RPM..............346 w/ big valves..............M1 & 2" spacer

3000.................426TQ/243HP....................410/234
3100.....................435/257.......................417/246
3200.....................446/272.......................436/266
3300.....................467/293.......................459/288
3400.....................478/309.......................478/309
3500.....................492/328.......................476/317
3600.....................503/345.......................484/332
3700.....................503/354.......................492/347
3800.....................505/365.......................503/364
3900.....................506/376.......................501/372
4000.....................509/387.......................505/384
4100.....................506/395.......................501/391
4200.....................503/403.......................502/401
4300.....................497/407.......................499/409
4400.....................491/411.......................503/422
4500.....................485/416.......................499/428
4600.....................482/422.......................496/435
4700.....................484/433.......................506/452
4800.....................490/448.......................507/463
4900.....................491/458.......................517/483
5000.....................496/472.......................518/493
5100.....................494/479.......................516/501
5200.....................486/482.......................511/506
5300.....................496/500.......................517/522
5400.....................503/517.......................522/537
5500.....................499/523.......................515/540
5600.....................492/524.......................503/537
5700.....................473/513.......................489/531
5800.....................459/507.......................471/520

Not too bad for an 8.9:1 compression 440 with factory iron heads and a XE285HL camshaft.
 
IQ52 said:
We are ready for some more pulls. 346 heads now flowing,

.100...........81/60
.200.........158/125
.300.........210/176
.400.........247/211
.500.........274/232
.600.........295/248
.700.........303/257
Click to expand...

Very Nice! Just so we know the whole story, what would a customer expect to pay for a complete set of factory BBM heads like this setup for a good hyd cam??? :happy1:
 
You must log in or register to reply here.
-

Back
Top