I Want To Get More Bhp Out Of My L24n... (r30)

[mpython78]

hey folks,

I was just wondering, I have a 1985 R30 Hatchback with the L24N engine, is it worth

to put some money in it to give her a bit more power ? I love the car and I'm going to keep her

for at least another 2 - 3 years. I'm able to invest some more money but I just don't

know what to do... I want to keep the engine and the auto transmission... (I'm lazy)

I'm not looking to double the kW, I just want to increase it a bit more. I need help,

I'm new to the jap cars, back in germany I had a Golf II and a W124 (300E). I'm not a genius

when it comes to Turbos or Superchargers...

first I'm thinking to upgrade the front breaks because they have no bite. I found some posts where people put R32

breaks to the R30's...

and than I'm ready to do more. but I don't know where to start.

1. should I get a nice manifold and exhaust system... or

2. should I think of a turbo...

3. or is it something else what I can/should do... ?!?!?!?!

but when turbo, what else has to be done/upgraded ? oil pump, injectors, vale + vale springs.... ect.

sorry for my english... I know it's

zee-german

[blind_elk]

The main problem with the L24 in the R30 is that it is very restrictive to airflow.

You will need to do a significant job on the head to open up the ports (inlet and exhaust) and probably fit some larger valves. The simpler solution (but probably not easiest solution) is to get hold of a 240Z head, and machine the indentations in the inlet ports for the injectors.

Then a nice set of extractors to get all that exhaust gas away from the engine. (you could probably do that first - cheapest and quickest)

If you can't find a 240Z head, try just a 240Z cam.

[mpython78]

The main problem with the L24 in the R30 is that it is very restrictive to airflow.

You will need to do a significant job on the head to open up the ports (inlet and exhaust) and probably fit some larger valves. The simpler solution (but probably not easiest solution) is to get hold of a 240Z head, and machine the indentations in the inlet ports for the injectors.

Then a nice set of extractors to get all that exhaust gas away from the engine. (you could probably do that first - cheapest and quickest)

If you can't find a 240Z head, try just a 240Z cam.

hey,

thank you for the quick reply.

sounds like a good plan with the head and the extractor. makes sense.

I never heard that the L24 is restrictive to airfolw, but thats why I ask you guys.

thank you again...

I found a new extractor on eBay for 300 $ you think this one would be the right one ?

http://cgi.ebay.com.au/Nissan-Datsun-240Z-...%3A1|240%3A1318

when yes, what is with the rest of the exhaust system ? can't find anything !?

zee german

Edited January 25, 2009 by mpython78

[OUTATIME]

yep they'll fit. all the l6's have the same flange pattern (l20a l20et l24 l26 & l28).

only thing with turbo'in the l24 is ecu options. i just used stock everything with vlt injectors and leaned out the afm. was shits n giggles set up cos had everything bar the zorst mani

but mates set up is still goin fine yr or so on. rb30 injectors, rb20 turbo tapped down fuel reg and vl fuel pump. get bout 300ks to a tank tho lol.

can go l20et or l28et ecu, loom, dizzy and injectors set up if can find them all. lot of l28et stuff on ebay motors. or aftermarket options but can get fair pricey there

probaby just a nice na set up would b the go, specially if a daily. the autos in them r not the best tho. very sluggish. manual is much nicer. but if keeping the auto maybe look at shift kit etc? i no stuff all about autos.

[BensDR30]

...

first I'm thinking to upgrade the front breaks because they have no bite. I found some posts where people put R32

breaks to the R30's...

By far the cheapest & easiest upgrade for the R30 front brakes is the Australian delivered R31. You can fit the disc & calliper straight on to the R30 struts (Series 1 cars need the struts reversed left/right as the calliper fouls the steering stop on the control arm).

The 4-speed auto can be modified (I built a tricked-up one for my MR30), but you're not talking about a huge difference in performance. In SA, turbocharging the R30 L24E is not allowed, but fitting an L28ET is ok (with engineering). That is probably your cheapest 'high-performance' option.

Anything less and the car will either be a big pain to drive (peaky atmo.) or remain as underpowered as it currently is!

They are a very reliable, and reasonably economical car, you might pick up some performance with head work, but the factory EFI is fairly primitive, and may not respond too well.

[VLTWagz]

yep they'll fit. all the l6's have the same flange pattern (l20a l20et l24 l26 & l28).

only thing with turbo'in the l24 is ecu options. i just used stock everything with vlt injectors and leaned out the afm. was shits n giggles set up cos had everything bar the zorst mani

but mates set up is still goin fine yr or so on. rb30 injectors, rb20 turbo tapped down fuel reg and vl fuel pump. get bout 300ks to a tank tho lol.

can go l20et or l28et ecu, loom, dizzy and injectors set up if can find them all. lot of l28et stuff on ebay motors. or aftermarket options but can get fair pricey there

probaby just a nice na set up would b the go, specially if a daily. the autos in them r not the best tho. very sluggish. manual is much nicer. but if keeping the auto maybe look at shift kit etc? i no stuff all about autos.

Nope they won't fit. Yes it's the same flange but they'll foul on the steering rack. You want a set like this that doesn't come down as far before turning rearwards:

I have a set the same as the eBay set (to suit 240Z) sitting here if you want to swing by and see (PM me).