Discussion in 'Tomahawk Block Buildups' started by slimfromnz, Feb 26, 2013.
very nice work > What tig did you buy , and how did it work ?
Thanks Mike. Its a CIGWELD Transarc 161 VRD. Works good, I think its only flaws are the operator
So close to finishing up the sump
Went thru and welded up some of the longer runs as I will have about 15kg of oil sloshing around and want to minimise the risk of stress fractures
I made up some anti-surge plates for the front and rear of the windage screen
Here they are installed. These will stop the oil trying to get thru the screen under accel/decel.
Trapdoor assembly welded in place
All I have to do now is the scraper and cut an access for the pick up to pass thru the screen
We have finished moving house so I took the opportunity to finish the scraper and pickup cutout
Had to work out how to get around the pickup tube
Now to clean it up and get it powder coated, back on the engine, back on the dyno
Very nice work. Looks like quite a few hours of work.
Yes been a lot of hours work. Hopefully solving my oil starving issues. We are back on the dyno next Friday the 8th.
Yes a lot of hours gone into this wee project. Probably put 5 solid days into it, with all the changes I had to make to get it right.
Here it is painted and ready to go back on.
Once I clean the internal parts of the oil pan and assemble, I can drop it on the motor and then work on getting it back on the dyno next week. Hopefully with better oiling.
5 days huh? Boy I thought it took me a long time to make a pan! Just kidding!! Looks good and it should work well.
Most people that have not built one don't realize that there is way more to them than just a "fancy box". I can't begin to tell you how many hours I had in the beginning doing R&D to make sure that everything "works & fits" properly, not to mention building all the jigs and fixtures required to ensure repeatability. When I build my "standard design" pans, I can do it in a reasonable amount of time.... but when it comes to building custom ones (like yours) the hours add up very quickly!
Hope all goes well on the dyno!!!
Always good to hear positive feedback from the pros
Well almost there
One last look at all the goods
Good to go
Just my opinion... I want to take that pic and make a poster size print of it and hang it in my garage. Wow... Dual-quads on Buicks make me giggle...:laugh: I love it!
Very nice job on the pan. Now lets see some numbers!
Like the pictures. Would like to see more. Have any of the pickup as it runs along the main caps and drops to the sump?
Lol. You have my permission, go for it.
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Thanks Rick. Bought the dyno date forward to Wednesday our time.:beer
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Yes Michael I do.
Mike allowed a small relief in each of the affected main caps for the pickup tube to hug the side of the pan.
Not all that easy to see with the bottom end wrapped in plastic
TA made the pickup with a standard round type pickup head, to which I cut off and made my own so I could incorporate a foot to stop it bottoming out on the floor of the pan.
Royden, Like I said before, it looks good, except.... I really don't like the screen in the bottom of your pickup. It looks WAY TO RESTRICTIVE!! The amount of holes you have in there are not nearly enough! Please add a lot more of them, make them larger or better yet replace the bottom with the appropriate screen. I see oil starvation issues with that pickup.
Moving in the right direction. Hope you have it running again very soon, you need to be able to "enjoy" the fruits of your labor. Like I said before, fab work is sorta like therapy, but to have it in the car and feel everything will be more enjoyable.
We'll guys, dyno is done.
I backed myself and left the pickup as it is, and it performed flawlessly. We did 16 pulls all to 6500 and it held oil pressure perfectly.
We ended up with 832hp @6100 and 790ft/lb @ 4500.
Really happy with the results. I will post YouTube links when I get them done
Great to hear Royden!
We stand corrected on the pickup, I am shocked it could suck enough with those tiny holes.
What was your oil pressure?
It would run up to 72lbs and drop down to 63-65 and hold it. There is a restriction somewhere but it performed sooo much better than before. Maybe it is in the pickup? We did 16 pulls and it held steady.
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The oil pan took 12qts which I think helps to. The cycling of the runs I think eliminates drainback as an issue. I looked at the pic of the pickup I posted, and it does look deceiving, the size of it. The surface area of the holes in total is 4x the surface area of the 5/8" tube.
Congrats Royden , glad to hear the dyno session went well. You should have lots of fun when you get the car finished up.
CONGRATS! Those are impressive #s, what a great way to start our a day over here. A nice cup of java and stout dyno #s:beer