C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

drysump the $5k question

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Old Mar 24, 2010 | 06:25 PM
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Default drysump the $5k question

That's going to be the tally for drysumping my 95

I'm really wondering if it will be worth it.

This is NOT a dedicated race car.

Autox/HPDE/street car
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Old Mar 24, 2010 | 07:00 PM
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You can save some $$$ and buy a used pump. Unless they go thru a real bad motor explosion or some serious neglect good pumps like Barnes/Weaver/Avaid/SCP last a really long time. Even if a stage or 2 is hurt you can most likely repair a used one fairly cheap. I see good used pumps sell for $350-$600 all the time.

Same with the tank - IF you can find one that will fit in the battery tray area. Tanks run between $200-$500

The pan will have to be new - because no one I know of races 1pc rear seal SBC blocks... A new steel pan from Champ or Comp Componets will set you back between $400-$650 depending on how many options you want.

The drive madrel will most likely have to be new and all of them are pretty much custom length. Then there is the belt ($50) and drive pulleys ($100)

The pump mounting bracket will have to be custom made to fit around the serp accy drive and C4's crossmember. No ideal how much that would cost to pay some one to build one.

New lines, manifolds, filters and fittings are just good insurance IMO and only a couple hundred dollars for a simple 3-4 stage system.

You could probally do it for around $2500-$3000 if you can find a good deal on a used pump and tank on ebay or racing junk.

You also have to decide if your going to drill and tap the cyl heads/lifter valley for oil scavange or just pull it all from the pan....

It makes HP and is not subject to the problems a wet sump has in high cornering loads..... It may or may not be worth the $$$.
Will

Last edited by rklessdriver; Mar 24, 2010 at 07:03 PM.
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Old Mar 24, 2010 | 08:19 PM
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IMO, no.

Give that 5k to your tuner so you can get your car done, spring is here...again.
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Old Mar 24, 2010 | 08:36 PM
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Hey Brian,
Mine cost about $2600 total but I also did most of the fab work myself and got a killer deal from a buddy on welding (nearly free so that saved me a few hundred). Obviously I already had a lot of the tools I needed and a very understanding wife. E-bay is your friend, but it was a lot of research and work.

Here's the breakdown:
Tank: Used coleman tank that I cut up along with 1/8" sheet aluminum to get it to fit in the battery tray. Trust me, there isn't a tank out there that will fit that area without mods $207.00 (including welding cost)
HTD Belt 720 x 20mm $20.00
Used Johnson's 4-stage Pump including cost of a rebuild -- would have been just as cheap to buy a new one! $1,184.00
Pump bracket -- $10 for aluminum stock to fab it
Pulleys (used e-bay) $45.00
Mandrel with a butt-load of shims and spacers (e-bay) $80.00
bungs and misc for Tank / etc (summit) $137.00
Oil Lines and AN Fittings (summit) $495.00
Remote Filter adaptor and a Fram HP6 (ebay) $35.00
Hamburgers Oilpan. The pan itself was only $30 (ebay) but it only had 2 pickups so I had a 3rd one welded in $115.00
Pan scavenge screen filters (optional, but good insurance for the pump -- from Poske performance, 3 filters) $96.00
Breather can (peterson from Poske) $67.00
Oil Thermostat -optional (Canton) $100.00
solid motor mounts, about $10 worth of steel and a beer for my brother to weld them.

If you go with a 3-stage (2 scavenge, one pressure) you can save a bunch on complexity, pump cost, lines, etc.

Back to your original question -- was it worth it for a 50/50 street track car? Heck no! (even for the $2600) It was really one of those projects that I thought would be really cool to do since I had never seen anyone do it on a C4 that wasn't a gutted race car. I'm very happy I did it but I don't think I'd want to do it again Never having to worry about oil pressure on the track is sure nice though...


If you ever make it down to Houston (I moved from Chicago) let me know.
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Old Mar 24, 2010 | 08:37 PM
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no, not worth it.

just put a canton high capacity oil pan in there.
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Old Mar 25, 2010 | 11:11 AM
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why not use an accusump? Doesn't it give an extra qt or 2 of oil if you uncover the pickup?

JS
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Old Mar 25, 2010 | 05:34 PM
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I'm going to run @ least an accusump & road race pan, I'm just wondering if it will be enough
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Old Mar 25, 2010 | 06:01 PM
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Originally Posted by BrianCunningham
That's going to be the tally for drysumping my 95

I'm really wondering if it will be worth it.

This is NOT a dedicated race car.

Autox/HPDE/street car
Is that before the blower? You do remember the blower, right?
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Old Mar 25, 2010 | 06:02 PM
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Originally Posted by cuisinartvette
IMO, no.

Give that 5k to your tuner so you can get your car done, spring is here...again.
Who would keep me amused if he did that?
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Old Mar 25, 2010 | 08:28 PM
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Originally Posted by MK 82
Who would keep me amused if he did that?
I was wondering when you would : through
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Old Mar 25, 2010 | 08:32 PM
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Originally Posted by cuisinartvette
IMO, no.

Give that 5k to your tuner so you can get your car done, spring is here...again.
that price IS for him to do it Ron
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Old Mar 25, 2010 | 10:26 PM
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Originally Posted by BrianCunningham
I'm going to run @ least an accusump & road race pan, I'm just wondering if it will be enough
I've been running a stock ('70) LT-1 pan and windage tray, along with an Accusump in my '84 turbo 355 for years. Tons of miles of track time with sticky tires, and no oiling issues.
Countless race cars in the sixties through eighties ran a lot faster than you're ever going to go, and ran just fine without a dry sump.
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Old Mar 26, 2010 | 11:44 PM
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Originally Posted by BrianCunningham
I was wondering when you would : through
Someone has to point out your absurdity. Why not finish one project before you dream about another? It makes you look absurd.

Last edited by MK 82; Mar 28, 2010 at 03:19 PM.
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Old Mar 27, 2010 | 02:16 AM
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Absurdity?
It's all part of the same install
What would you have me do install it all, then rip it all out again
Do you have a clue how ones even installed?
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Old Mar 27, 2010 | 02:58 PM
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Brian, have you looked up BTF (baldturbofreak)? He installed one on his car.

Edit to add a link to his site. www.baldturbofreak.com
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Old Mar 27, 2010 | 03:05 PM
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Originally Posted by BrianCunningham
Absurdity?
It's all part of the same install
What would you have me do install it all, then rip it all out again
Do you have a clue how ones even installed?
Here is the difference between you and me. I don't talk, talk, talk about an engine build that has been going on 3? years. I personally couldn't care less what you do with this ?build? Just finish it and stop talking about it.

When I point out the absurdity of it all, you resort to personal attacks. Just finish it already.
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Old Mar 27, 2010 | 05:53 PM
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Talk?
That's ALL you ever do
What have you actually built?

The reason it's taking so long, is that it's a lot harder to do than you
think. Maybe if you actually tried it you'd find out.

If you can't stand the heat than STFU!
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To drysump the $5k question

Old Mar 27, 2010 | 05:54 PM
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Talk?
That's ALL you ever do
What have you actually built?

The reason it's taking so long, is that it's a lot harder to do than you
think. Maybe if you actually tried it you'd find out.

If you can't stand the heat than STFU!
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Old Mar 27, 2010 | 09:09 PM
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A wise person once said. "Before you engage in a war of wits, make sure your opponent is armed." For the record, I have refrained from personal attacks. You have not. Your arguments sound like those of a 5 year old. I expect this thread to be shut down soon because of that. I have been places and done things you can only dream of.

23 years as a fighter pilot and 20 years as an airline pilot and Captain. You imply that I can't stand the heat. I have flown combat sorties in two wars in defense of the interests of this country. What have you done? It appears that you have self esteem problems and feel the need to build yourself up. You can't hold your own in a civil dialogue and resort to personal attacks. Do you really think I care about your opinion of me? I have and can build engines but that is irrelevant. It has been so long that I have forgotten exactly what your project is. Enlighten us as to what has taken so long. It certainly has never taken me the amount of time you have in this "project."

As a fellow Engineer I wish you only the best but you need to wake up and smell the coffee. My PM box is full of messages from folks who recognize your folly.

Eddie

Last edited by MK 82; Mar 27, 2010 at 09:20 PM.
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Old Mar 28, 2010 | 02:38 PM
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What does what you flew have to do with what you know about drysumping an engine?

can you answer the question or not?

if you can't than the retiree need to go find another hobbie
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