Boosted Beaumont Build - Page 10 - Chevelle Tech
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post #136 of 149 (permalink) Old Mar 17th, 20, 1:20 AM
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Chris
 
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Location: Alberta, Canada
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Re: Boosted Beaumont Build

I love lightweight valvetrain. Some builders scared me away from beehives, but I am sure they'll be fine. I hope the dual spring beehives get a bigger selection.

1971 Chevelle SS454, T56 Magnum 6 speed, 3.31 Posi

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post #137 of 149 (permalink) Old Mar 22nd, 20, 9:56 PM Thread Starter
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Chris
 
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Location: Calgary, Alberta, Canada
Posts: 998
Well the motor is back together, assembled! So I re-used my old oil pan with 6 holes punched into, HaH. Welded them up on the inside, straightened the pan rail, check to make sure it’s flush and Banda bing. Will make for a great story if someone ever decides to look under the front. A lot of interesting parts on this car to be honest. Besides all that a new pan up here is around $600can.

Other than that, heads and manifold went on smooth. Still using the Edelbrock Super Victor intake. This will get changed out in the future for a side draft sniper setup on a blower manifold, stock hood deal. Changed out the stock zz502 pump for a Melling M77HV. Was always under the impression the stock motors come with high volume pumps, that’s not the case. M77HV is a high volume standard pressure pump. Easy was to tell is stock gear height is 1.00”, maybe 1/16” more. HV pumps are 1.3”.

Utilizing a Power Bond SFI harmonic damper. Have used this in the past with great success.

Oil drain back from the turbo remains in the same spot, was going to put it in the timing cover but not enough angle for drain back and not room to weld one in.

If there are any questions on the motor build, feel free to ask. I will share the knowledge here no problem.
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1968 Beaumont
540 BBC + 15psi Boost via Single Garrett GTX
Stock looking, and fairly stock sounding
HP and ET not determined yet!

Boosted Beaumont Build:

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post #138 of 149 (permalink) Old Mar 23rd, 20, 12:34 AM
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Vince
 
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Re: Boosted Beaumont Build

Quote:
Originally Posted by GoFast Beaumont View Post
Well heads are cleaned and assembled. Was gonna send them off to Foxwell for some magic but given the current events I decided not too.

So new seat pressures are at 170-173lbs with a 408lbs rate. Did some calculating and with a 140lbs(stock) rate on a zz502 camshaft and 10psi boost I need 175lbs. Now given I run a beehive with tool steal retainer I thinking I am good with a marginal buffer zone.

All in all hopefully the combo lifters of morel(exhaust) and GM 572(intake) will hold up to a lot of street duty.

As well I am re-using my valve springs. For inspection I completed a penetrant dye test as well checked all valve spring pressure.

Parts list here is:
AFR 305 (cast chambers, non cnc, very old head)
PAC alloy springs 175 seat with 408 rate
Took steel retainers
10 degree locks
Viton seals
what beehive spring & retainer set are you using here?
same seat # spec's on exhaust as intake??

68-Malibu 427bbc/t4oo/3.73-12bolt/pro charger f1-r
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post #139 of 149 (permalink) Old Mar 23rd, 20, 10:46 AM Thread Starter
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Chris
 
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Re: Boosted Beaumont Build

Quote:
Originally Posted by VinceS427bb View Post
what beehive spring & retainer set are you using here?
same seat # spec's on exhaust as intake??
valve springs are Pac 1255X or you can use a Lunati 74855-16, these are both the same valve spring
Retainer is a Comp Cams 1756, at the time PAC alloy didn't sell tool steel retainers
Valve locks are standard set without lash cap relief. I have found over the street abuse the valve lock relief seems to deform the valve stem.

same pressures for both intake and exhaust. The morel lifters are heavier and placed on the exhaust so I figure it will even out.

so since that post I decided to lower the valve spring pressures down to 155-160 seat initially. I did this with a +0.050 valve lock. reason being is I want to see how the lifters respond to the pressure first, my concern is the GM 572/620 lifters. if all good, bleed down looks good, then I will re-install the standard locks and bring the pressure back up to 175.


if funds are looking good I may splurge for Ti valve locks and aluminum rocker arms (running the old comp pro magnum rockers). I feel a lightweight valve train with the lighter seat pressure is advantageous for a full street duty car.

1968 Beaumont
540 BBC + 15psi Boost via Single Garrett GTX
Stock looking, and fairly stock sounding
HP and ET not determined yet!

Boosted Beaumont Build:

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post #140 of 149 (permalink) Old Mar 23rd, 20, 8:52 PM Thread Starter
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Chris
 
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Location: Calgary, Alberta, Canada
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So after 5000mi of a vacuum pump I decided I should look at this thing and rebuild it. Needless to say I pulled it apart, examined it, put it back together. Near perfect still. Wiper blades still crisp and bearing still fine with no play. Not sure what the big deal was about running these on the street.

As you can tell mine is. Mounted really low, and collects a lot of bug guts and road debris.

Builds about 7” vacuum at idle, cruising/light throttle it’s about 12-13” vacuum.
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1968 Beaumont
540 BBC + 15psi Boost via Single Garrett GTX
Stock looking, and fairly stock sounding
HP and ET not determined yet!

Boosted Beaumont Build:

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post #141 of 149 (permalink) Old Mar 23rd, 20, 11:25 PM Thread Starter
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Chris
 
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Location: Calgary, Alberta, Canada
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The eagle has landed.

This round I went back to my aluminum flywheel. I have mixed feelings about this flywheel but hoping with 40ci more displacement, much better torque bottom end cam, slipper clutch, and boost control it will leave coming out of the hole a lot better. IF I can build at least 3-5psi on the 2-step it will be gone.

Got some more interesting upgrading coming up.
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1968 Beaumont
540 BBC + 15psi Boost via Single Garrett GTX
Stock looking, and fairly stock sounding
HP and ET not determined yet!

Boosted Beaumont Build:

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post #142 of 149 (permalink) Old Mar 27th, 20, 11:59 AM Thread Starter
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Chris
 
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Progress. So here’s a little upgrade. Found a brand new Garrett GTX 5018r locally that should drop back pressure and bring up the boost a lot. Quit the size difference between the two looking at older photos. Ball bearing option sure is nice over the journal. I don’t expect this to hinder spool times at all. Even came with a stainless steel Tial exhaust housing. Fit might be a slight problem, we’ll see. Maybe have to sent the inner fender in the select locations. Working on a 6” intake for it now as we speak.
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1968 Beaumont
540 BBC + 15psi Boost via Single Garrett GTX
Stock looking, and fairly stock sounding
HP and ET not determined yet!

Boosted Beaumont Build:

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post #143 of 149 (permalink) Old Mar 29th, 20, 7:10 PM Thread Starter
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Chris
 
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Well things are progressing at a pretty decent pace. Some small stuff to finish up but the biggest now is retro-fitting the new turbo in place. Doesn’t look like it will take too much work. Buddy of mine spun up some adapter flanges to the tial housing, just need to find the right size v-band clamps. Here’s a picture of the 4” to 5” adaptor with v-band machined into it.
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Chris27 and Lew540 like this.

1968 Beaumont
540 BBC + 15psi Boost via Single Garrett GTX
Stock looking, and fairly stock sounding
HP and ET not determined yet!

Boosted Beaumont Build:

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post #144 of 149 (permalink) Old Apr 13th, 20, 8:46 PM Thread Starter
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Chris
 
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Well that sucks... summit Midwest drag got postponed till 2021. I was on a good schedule, if anything ahead for once. Ah well probably for the best.

Anyways got the electric boost control completed up. It’s a 2-3port solenoid setup. All controlled by super sniper. Dome and MAP control.

Oil cooler line for the turbo completed. Mounted in a 1 way check valve so it doesn’t drain back through the block as well a filter. Used a Aeromotive fuel filter in this case, keeps it simpletons I only need to pack 1 extra filter cartridge instead of 2 different types. This is a 40 micron stainless.

Oil cooler mounted. It is sitting underneath the drivers seat near the frame. Most likely build a small scoop for it to pickup more air. Hopefully this turns out to be a good location. I couldn’t get it to the front with -10AN lines due to a bunch of turbo exhaust everywhere.

Vacuum catch cans all hooked up. I did this one on the cheap. I was going to fabricate a aluminum 3/4” Y-fitting. Instead I went to home depo and got some brass fittings and be done with it, HAH! I am sure it will work fine.

Secondary fuel line to the sniper done as well, pretty basic there. Also fixed the throttle WOT. Was only achieving 90%, now it’s fully 100%.
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Chris27 likes this.

1968 Beaumont
540 BBC + 15psi Boost via Single Garrett GTX
Stock looking, and fairly stock sounding
HP and ET not determined yet!

Boosted Beaumont Build:

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post #145 of 149 (permalink) Old Apr 26th, 20, 7:51 PM Thread Starter
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Chris
 
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Well the intake got out of control! 6” inlet With a 12” long by 7.5” diameter filter. Roughy is on a 4.5-5.00” bend CLR. Not my best work but for my first pie cut bend fabrication I am happy. Will post up some pictures once I finish weld everything.

Anyone know where I can get a 6” coupler? Right now I am thinking a rubber sewer one is my only bet. I can’t find anything in silicone.
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1968 Beaumont
540 BBC + 15psi Boost via Single Garrett GTX
Stock looking, and fairly stock sounding
HP and ET not determined yet!

Boosted Beaumont Build:

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post #146 of 149 (permalink) Old May 11th, 20, 2:21 PM Thread Starter
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Chris
 
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And Vroom... she’s running now!

Took it for a quick 20min test drive and holy crap. A 540 with a zz502 cam is very torque. Just tons. Responsive is a understatement. I will NEED to switch over to a progressive linkage for street driving. It is literally a light switch right now. Power is definitely up. I used my old fuel mapping from the 502, it was so off it would even run till I figured it out. Way outside of the snipers correction limits. Brought fueling up over 20% so far is runs great with very minimal correction.

Will most likely follow the following break in:

30min very easy run time change oil
500km mild run time change oil
500km ramp in boost change oil
Full nut, ready to rock then.

Right now I am seeing some brass in the oil. Not to sure what it is, thinking the crankshaft end play is too tight right now. I don’t have anything I the motor that is brass besides the valve guides. Distributor gear is melonized, checked it and looks great. Will ride it out on the short term and monitor oil before getting to excessive.
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1968 Beaumont
540 BBC + 15psi Boost via Single Garrett GTX
Stock looking, and fairly stock sounding
HP and ET not determined yet!

Boosted Beaumont Build:

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post #147 of 149 (permalink) Old May 11th, 20, 11:32 PM Thread Starter
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Chris
 
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Progressive linkage install. This should be standard for sniper setups!

Smoothest transition yet, is nothing like the old double pumpers carbs. To be honest you don’t even feel when the secondaries are opening. Got mine set as early as possible with is 30%. You still have the ability to run it at 1-1 if you want the aggressive throttle.

Holley 20-122.
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pockets likes this.

1968 Beaumont
540 BBC + 15psi Boost via Single Garrett GTX
Stock looking, and fairly stock sounding
HP and ET not determined yet!

Boosted Beaumont Build:

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post #148 of 149 (permalink) Old May 15th, 20, 12:01 AM Thread Starter
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Chris
 
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So I had some conflict with a 6” intake elbow I made and a charge tube. Solution cut out enough so they both work. This is probably the most complex piece I have built, roughly 30hra or more into it. Heh and it doesn’t even look that good. Ahh well. As long as it functions. The section is 4” tubing in a 3.5” slot. So I figure the fabricated dent is in the 6” rough by 1.25”. Should hinder flow too to effect performance.
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1968 Beaumont
540 BBC + 15psi Boost via Single Garrett GTX
Stock looking, and fairly stock sounding
HP and ET not determined yet!

Boosted Beaumont Build:

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post #149 of 149 (permalink) Old Jun 20th, 20, 12:43 PM
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Kerry
 
Join Date: Feb 2013
Location: Lloydminster, Alberta
Posts: 1,058
Re: Boosted Beaumont Build

Nice build! In your 1 photo of the valve spring, which shows the rocker studs, I would suggest putting in studs with more shank portion, so the fulcrum of the rocker engages more shank, instead of sitting mostly against threads. Takes some play out of the rocker movement. ARP 135-7202 for the intakes.
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