new engine rules

[dat u racing]

so they will be allowing D.O.H.C. ! stock efi any compression,inline 4

what engine should i be looking for?

[greybeard]

I assume FJ will not be allowed....

 

So then I say....

 

KA24DE.

[dat u racing]

are all ka motors 3 valve, if so this may be an issue.

[datzenmike]

KA24E is 3 valve SOHC

 

KA24DE is 4 valve DOHC

[dat u racing]

ok it seems like 2 valves to many, i'm guessing a little bondo on the cover will fix that. so what year car shoul i be searching for?

[NorCalDime]

your expecting a dohc 8 valve engine????

 

 

Sierra Cosworth's have a 8v dohc ,

 

the Ford N9A is what you need.

* Electronic fuel injection (Batched multi-point)

* Power: 123 hp (92 kW) at 5500 rpm.

* Torque: 174 N

Edited November 29, 2009 by NorCalDime

[dat u racing]

I'm racing lz-24 datsun 620 and setting up 240sx WTF is a ford

[72240z]

I'm racing lz-24 datsun 620 and setting up 240sx WTF is a ford

 

He was suggesting a 8 valve dohc motor for you. Since its retarded to have a 2 valve per cylinder dohc, options are limited. Sure as hell not going to find a datsun/nissan in that configuration.

Edited November 30, 2009 by 72240z

[NorCalDime]

He was suggesting a 8 valve dohc motor for you. Since its retarded to have a 2 valve per cylinder dohc, options are limited. Sure as hell not going to find a datsun/nissan in that configuration.

 

lol i know jeesh! your welcome for the info dat u :P

[dat u racing]

well ok the rules say 2 valves/cyl, guess that will be corrected. so i,m looking for 90' s 240 sx motor?

[datzenmike]

KA24E is 3 valve SOHC

 

KA24DE is 4 valve DOHC

 

If you can only have two valves per cylinder then the 240sx KA motors are OUT!

 

The Z24 is is pretty much a KA motor bottom end. If you swap KA24E rods and pistons into the Z24 block then it is, but much lighter. Only 2 valve head you could use is the L head so you are as far as you can go. A guy on here: http://forum.ratsun.net/member.php?u=2422 stroked the Z24 crank and used some king of toyota cut down piston /rod (I forget) and punched it out to 2.6 liters.

 

Found it: http://forum.ratsun.net/showthread.php?t=16959

Edited November 30, 2009 by datzenmike

[scooter]

too bad ur a ford 4 cyl hater, cus i'd say 2500 stroker pinto motor with a esslinger head, or 1.6 lotus cortina.

 

pinto motors are similar to datsuns i guess.. theyre aweseome motors, way better than v8 fords

 

 

go to esslingers website is all i got to say.

[datsunaholic]

Otherwords they wrote the rules to allow a Ford N9A, but made the rule LOOK like it allowed a broader scope. Someone must have lobbied the rules committee pretty hard for that one. Happens in boat racing all the time, that's how a Ford 2.0L is allowed in the 1L class (but everyone with $$$ runs 2-stroke jetski engines now).

 

You already HAVE your ultimate engine if you want to stay Nissan. Anything 2.4L after the Z24 is going to be at least 12V. All you need to change is your fuel delivery if you want to go EFI.

[MikeRL411]

Speaking from ignorance but how many valves did the Cosworth Vega engine have? They came with a special ratio Borg Warner 5 speed that was matched to the engine torque curves and were real smokers on the race circuit.

[NorCalDime]

Speaking from ignorance but how many valves did the Cosworth Vega engine have? They came with a special ratio Borg Warner 5 speed that was matched to the engine torque curves and were real smokers on the race circuit.

 

 

the dohc had 16valves

[ggzilla]

Cosworth Vega had one engine choice, the DOHC 16-valve head engine.

 

Vegas were real smokers on the road too...they are nearly all gone, while Datsuns are still being used as daily drivers. More Pintos have survived, I saw a couple last year, along with dozens of Datsuns commuting around.

[dat u racing]

OK so just to clearify the rules are duel overhead cams, aftermarket E.C.U.AND INJECTERS ARE OK AND ANY COMPRESSION, NO DOME PISTONS.

[greybeard]

most all modern production DOHC engines are 16V, so is it stated in the rule book 2 valves per cyl.?

 

otherwise 4 valves per cyl. will be OK,

 

What is the toyota 4 cyl. engine? DOHC 4V?

 

if so that would make the KA24DE the engine to use, with a nice stand alone engine management system.

[greybeard]

Speaking from ignorance but how many valves did the Cosworth Vega engine have? They came with a special ratio Borg Warner 5 speed that was matched to the engine torque curves and were real smokers on the race circuit.

 

 

75 Cosworth Vega was 4 sp.

 

for 76 the 5 sp. was an option, 4 speed still standard. only about half had the 5sp

 

option.... or about 800 cars.

[ggzilla]

Go with the Rover K-series engine. The most HP per pound.

[greybeard]

Go with the Rover K-series engine. The most HP per pound.

 

 

 

What do you find that in in the US??

[ggzilla]

You buy an import motor ... or find in a junkyard a Caterham 7, Lotus Elise, or Land Rover Freeland.

 

Do the new rules require that it originally come in an "American" car?

[dat u racing]

multy valve ok and same engine as body manufacter

[Mark_Z28]

Only DOHC 2 valve engine I know of is the Toyota 2T-G engine, but its only a 1.6 liter, lol.

[greybeard]

multy valve ok and same engine as body manufacter

 

 

OK so KA24DE it is.....

 

or maybe an FJ :cool: