Drew's engine, is getting close

[Hap Waldrop]

Wow I swear after last year being mostly pretty stock w/ a cam engines, an a few race motors, I forgot how dang long it take to build a totally tweaked ported head street motor, about as much work as full blown race engine. But Drew's jouney is almost over, I worked on and off 7 days just porting his head, and tricking out his bronze guides, now his head is gone off for hardend exhaust seats, I should get it back tommorow or Friday. Then I'll have to do a little bowl blending on the seats, paint the head, then assemble it, the bottom end is finshed outside a few exterior bolt ons. I got to address the rock arm assembly, thinking a new shaft is all that is needed there. So hopefully next week, Drew's engine will be done and getting bolted down to a pallet and readied for shipment to him. I move a little slower in the summer due to the heat in the shop, near a 100 for 8-10 stints takes it tollo on you, but bottom line this ia very detailed engine with all the TLC I would give a race motor, so time consuming is the key word here, but the payoff for Drew should be well worth it

Then on to a MG specfic Superchearged engine with custom low compression pistons to be able to run more boost. Luckily on this engine, I have a brand new Sean brown head to just bolt on , so ther's a time saver there for sure, but it also gwetting the Terra Yella ( I probably slaughtere that as for as spelling ) roller rocker set up, it a set up that emplot stud mounted roller rocker arm much like a V8 chevy.

Then at the same time I'll get more involed with Rays motors, which is close to same recipe as Drew, but with more bolt on goodies, like Winner Circle oil pans, and roller rocker arms, aluminum flywheels, etc..

Add to that a few more fall street engine, some farly stock, some more tricker ones, a couple of vintage MGB race engines, A SCCA race 1275, and always a backlog of SU carbs, race cranks and rods, and ole Hap is going to be a busy boy

Now if I could just win the lottery, I could hire someone to build my race car, while I'm working on customer items

 

[John Moore]

Cool beans.

Have you had the opportunity to inspect or play around with a head Sean has worked on before? Back when I had him to the work on mine, I had him do it with an eventual blower in mind.

I'm sure you had to put it on your flow bench to see how they compared with your work... right?! :laugh:

 

[drooartz]

Woohoo!

Lots of long term projects coming to a head these days. I just got my new steering wheel in after a two year wait, and now my engine is nearing completion. I just might be driving again next spring after all.

 

[Hap Waldrop]

Cool beans.

Have you had the opportunity to inspect or play around with a head Sean has worked on before? Back when I had him to the work on mine, I had him do it with an eventual blower in mind.

I'm sure you had to put it on your flow bench to see how they compared with your work... right?! :laugh:

Nah, I didn't pick over Sean's head too much, I'm sure it will do just fine, he ports head, I port heads, I looked at it when it first got here, then put it back in the box, it looks like nicely done work to me. After you've ported as many heads as Sean and I have, you've seen it all, we met the threshold with these engines a long time ago, not much room left to reinvent the wheel The supercharger does put a new twist on stuff, but not like it would be alot different than a race head. THe big thing with squeezing power out off the SC engine is too get the conpression ratio lower then a off the shelf pistons offer, so you can safely throw most boost to it,I make a MGB piston that takes it down to 8.0 to 1. On these heads with just carbs it's a combination of better flowing when porting and increased compression ratio, these siamese head responds nicely to compression ratio boost, so if you port a head without bumping on the compression ratio, you're leaving a few ponies on th table. Drew engine is about 9.7 to 1, we could go more on pump gas, but Drew wants to be a little conservative with the 91 octane offered in his area, most of the ccompression boost in Drew's engine is in the piston I used the AE21253, it has a higher compression hieght than the standard AE21251.