545" High Riser Build

[cwhitney]

Jay did you get to see a set of ponds SOHC heads yet. Are they going to be on your new engine? They sure look nice! I no he has spent alot of R&D time on them.

[jayb]

I have seen Robert's heads, and will be putting them on at least one of my SOHC engines next year.  Unfortunately there hasn't been time since his heads have come out to get an engine ready with them, because I need completely different pistons, so I'm running my existing heads on the engines at the moment.

[jayb]

Finally, this engine is ready for the dyno.  I have spent the last two weeks building custom brackets for the crankshaft sensor and the cam sensor, the cam sensor target, the crank sensor target (this is the big toothed wheel in front of the harmonic balancer), and other brackets for mounting the alternator and Peterson oil pump.  It was unbelievable how much time this all took.  On top of that, it took me nearly the entire weekend last weekend to finish welding up my oil pan, make the swinging gates and doors, weld in the pickup tube, and leak check the pan.  Yikes, what a struggle!

Dyno day is this coming Saturday, and we'll run on Sunday too if required to get the engine sorted out.  Hopefully there won't be any showstoppers; that would put a serious crimp in my plans for Drag Week this year.  I'm hoping for 900 horsepower, but expecting more like 850; we will see what happens.  Here's a couple of photos of the engine on the stand:





I'll post the dyno results over the weekend - Jay

[Bullitt]

Holy crap that HR engine looks like a beast!!!

Josh

[Chad D]

The collectors look small for an engine of that output, will you be testing other sizes?  Or is the camera angle just messing with my eyes?

[ScotiaFE]

Sure it looks frigging awsome, but with out a really kool air cleaner it my suck in small kids and such.

[jayb]

The collectors look small to me too, but they are 3.5" outlets, and the primaries are 2 1/8". They are merge collectors, so they neck down in the middle to less than 3". According to Blair Patrick, he has run those collectors on engines over 900HP, so I don't think they will be holding me back.  The part of the exhaust system that will really limit power production, in my opinion, is the immediate turndown of the primary pipes after the flange.  Wish the Mustang engine compartment had more room for the primaries to come straight out of the ports for 8" so, but of course it doesn't.

[KjcfeF100]

This engine interests me more than the cammers, I'm just more of a fan of the traditional headed FE's.  If you were going to give me ( ) one of these, I'd take this 857HP (that's my guess) over say a 950HP cammer; but hey, that's just me  .  Looking forward to some dyno. no.s and some E.T. numbers

[KMcCullah]

Muey bueno!!!!!! Your aluminun TIG is coming along nicely also. I see a sight glass on the front of the pan too. That's a good idea for several reasons.

[dieselgeek]

expecting 850, hoping for 900.   Sounds like a good goal!!  See you on Saturday morning,
-Scott

[Joe-jdc]

Haven't felt the ground shake yet, everything working on the High Riser?    Might have to switch to a certain "little" Y-block I watched run this week if it comes up short!  LOL.  Just poking fun.  Hope it exceeds your expectations.  Joe-JDC.

[drdano]

"I'll bid 865 horsepower, Bob."

[fetorino]

I bet he is sandbagging and it makes over 900. 

[Joe-jdc]

In theory, he is limited to ~840-850HP with 410 cfm heads unless he spins it high.  His SOHC made around 1.65 hp/ci, and it would be a push for a pushrod engine to get there with 410 cfm.  The unknown is the sheetmetal intake and throttle bodies and their efficiency, IMO.  Sometimes a sheetmetal intake can be 120% effecient in filling the cylinder, and actually make more than the .257 X cfm X # cylinders.  Could be a sleeper, and surprise even him if everything falls into place. 

[dieselgeek]

Update:  just finishing up the wiring now, they're putting oil in the motor.  The plan is to fire it up tonight and make sure everything is working, then make pulls tomorrow morning.