Rebuild or MotorSwap

General Discussion about the Datsun PL510
Ravins510
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Rebuild or MotorSwap

Post by Ravins510 » 29 Jul 2005 19:01

Just wondering what you guys think rebuild my L20 and make it crazy or just swap a VG30 into it I am just wondering if the VG will make it handle way different I want a road/track car

Ash510
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RE: Rebuild or MotorSwap

Post by Ash510 » 29 Jul 2005 20:38

If you want a good daily driver I would say go with a KA. swap. I have seen lots of them, and is just a great enjine for a 510. If you wand more power it gets to be a lot bigger job for an SR20. I would say KA if you have limited funds, they are easy to find and get parts for.

Derek
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RE: Rebuild or MotorSwap

Post by Derek » 29 Jul 2005 21:51

Having rebuilt an L series lately, I would also suggest a KA swap -- it'll be cheaper in the end.

Ravins510
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Post by Ravins510 » 30 Jul 2005 00:08

I was thinking that too KA on carbs would be nice I am about 2500 short of full SR20DET Install but I am also thinking about KA on Boost too

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68Datsun510
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Post by 68Datsun510 » 30 Jul 2005 01:46

Which is why my next engine willb e a built up KA24DE.

A jim wolf ECU and header made 169HP at the wheels on a KA twin cam.

Hehehehehehehehehehehehehe.
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Cody Mould
'69 510 4-Door
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Sacramento Datsun Owners
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68Datsun510
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Post by 68Datsun510 » 30 Jul 2005 01:52

BTW, check this out.

http://www.datsuns.com/Tech/datsundyno.htm

The KA24DE's outpower all but the twin cam VG's!
_________________________________
Cody Mould
'69 510 4-Door
Cameron Park, CA
Sacramento Datsun Owners
~Visit Sacramento Datsun Owners on Facebook!

510rob
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Post by 510rob » 30 Jul 2005 09:50

If you want a track car, check the rule book to make sure you don't fuck yourself on the class you intend to run because as soon as you start swapping motors, you are slotted into open classes where anything goes, where you'll need a turbocharged big block in a tube-frame car if you want to be near the front row... on the other hand, those big boys usually blow up and leave the more humble cars to win (the story of the hare and the tortise comes to mind, and it's funny to see it happen live)

I'd say the cheapest route is to a modest and minimal rebuild on your L20B. Next is the KA swap, and if you can find a KA that's still in good shape, the cost and work of swapping might equal the rebuild cost for the L20B. The VG30 is a heavier motor compared to the fours, so forget about it if you want to build a track car, unless you are going all-out and plan on building a pretty rip-snorting VG (which I doubt because I have never yet seen something like that done because it's totally unnecessary)

The other option is a Mazda rotary - lightweight, and LOTS of power (but I can't stand the sound of the 2-rotors to be honest)

I don't know, I'd be inclined to rebuild the L20B myself because if you swap a KA in there, then take it to the track, and drive it like most people drive cars at the track, the KA is going to start wearing everything out like half-shafts and whatever else you can think of where the L20B will be a fun car for a long time. Put a cam in the L20B, build it well, then rev it to 7500rpm and it will be a fun machine...

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caesarDX
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Post by caesarDX » 30 Jul 2005 09:55

Does anyone have any experience with Ka24de-turbos? :twisted:
1984 Renault R5 Turbo2 - L' Enfant Terrible
1989 E30 M3 "God's Chariot"
2001 Renault Clio V6 Phase 1

Derek
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Post by Derek » 30 Jul 2005 10:36

510rob wrote:If you want a track car, check the rule book to make sure you don't fuck yourself on the class you intend to run because as soon as you start swapping motors, you are slotted into open classes where anything goes, where you'll need a turbocharged big block in a tube-frame car if you want to be near the front row... on the other hand, those big boys usually blow up and leave the more humble cars to win (the story of the hare and the tortise comes to mind, and it's funny to see it happen live)

I'd say the cheapest route is to a modest and minimal rebuild on your L20B. Next is the KA swap, and if you can find a KA that's still in good shape, the cost and work of swapping might equal the rebuild cost for the L20B. The VG30 is a heavier motor compared to the fours, so forget about it if you want to build a track car, unless you are going all-out and plan on building a pretty rip-snorting VG (which I doubt because I have never yet seen something like that done because it's totally unnecessary)

The other option is a Mazda rotary - lightweight, and LOTS of power (but I can't stand the sound of the 2-rotors to be honest)

I don't know, I'd be inclined to rebuild the L20B myself because if you swap a KA in there, then take it to the track, and drive it like most people drive cars at the track, the KA is going to start wearing everything out like half-shafts and whatever else you can think of where the L20B will be a fun car for a long time. Put a cam in the L20B, build it well, then rev it to 7500rpm and it will be a fun machine...
Good point Rob -- that's why I hope to be satistfied with <130hp in my car. It is about the corner, not raw power for me (I do however want a blisteringly fast daily driver). That being said, a totally stock KA would be a nice amount of power without getting too crazy.

As for built VGs Thomas Dockery in the states has an NA VG34 (I think) in his 510 making ~280hp. That sort of power sounds fun too, but the five figure engine bill would scare most people back to SR20DETs.

freekwonder
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Post by freekwonder » 30 Jul 2005 11:05

ka24de, get a good condition one, put a turbo on it and run 350-400 whp on a stock motor.

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caesarDX
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Post by caesarDX » 30 Jul 2005 11:14

freekwonder wrote:ka24de, get a good condition one, put a turbo on it and run 350-400 whp on a stock motor.
Has anyone had experience with a kit on an actual 510? (not a 240)
1984 Renault R5 Turbo2 - L' Enfant Terrible
1989 E30 M3 "God's Chariot"
2001 Renault Clio V6 Phase 1

Derek
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Post by Derek » 30 Jul 2005 11:21

freekwonder wrote:ka24de, get a good condition one, put a turbo on it and run 350-400 whp on a stock motor.
If it was just that easy, I doubt you'd see so many SR20DET 240sx's around.

freekwonder
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Post by freekwonder » 30 Jul 2005 12:33

Derek wrote:
freekwonder wrote:ka24de, get a good condition one, put a turbo on it and run 350-400 whp on a stock motor.
If it was just that easy, I doubt you'd see so many SR20DET 240sx's around.
it is that easy. the KA is just as strong as a SR. the ony reason people go with SRs is the higher RPMs and its JDM tyte y0! :roll:. a good KA24DE can handle 350-400 at the wheels on stock components. shot peen the rods, arp hardware, good head gasket and you can push closer to 500 at the wheels.

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caesarDX
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Post by caesarDX » 30 Jul 2005 13:20

freekwonder wrote:
Derek wrote:
freekwonder wrote:ka24de, get a good condition one, put a turbo on it and run 350-400 whp on a stock motor.
If it was just that easy, I doubt you'd see so many SR20DET 240sx's around.
it is that easy. the KA is just as strong as a SR. the ony reason people go with SRs is the higher RPMs and its JDM tyte y0! :roll:. a good KA24DE can handle 350-400 at the wheels on stock components. shot peen the rods, arp hardware, good head gasket and you can push closer to 500 at the wheels.
So who on this board has actually done it?
1984 Renault R5 Turbo2 - L' Enfant Terrible
1989 E30 M3 "God's Chariot"
2001 Renault Clio V6 Phase 1

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bertvorgon
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Post by bertvorgon » 30 Jul 2005 13:41

Yah, what a crock! I know what it has taken the race shop to build a National Title winning car at 300 HP, you run it on race gas, tear it down after every third race, replace stuff like no tommorrow to keep the reliability up, using the best and most expensive parts available...etc, etc.....sheesh..I can just see that the tranny would just love that....
"Racing makes heroin addiction look like a vague wish for something salty" - Peter Egan

Keith Law
1973 2Door Slalom/hill climb/road race / canyon carver /Giant Killer 510
1968 Vintage 3HP Mini Bike
1971 Vintage 13' BOLER trailer

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