budget RB20det upgrades

[1598cc]

right so being a student im limited to $$ , and need to get this skyline up to D1 spec.

basically ive got a budget of a grand to do this (as far as engine mods go)

ive thought up this plan; but bare in mind ive never worked on rb's before, just turboing b16a's/b18cs 4agtes etc.

VG30 turbo or rx7 in gtst exhaust housing(which i already have) or RB25turbo:

does anyone have the a/r's for the VG30's off the SOHC 3L engines?

3" exhaust bla bla

stock ecu with a safc:

now does anyone here actually have their safc tunned to run higher boost. and if so, what settings is it at, as they **** around with the timing abit.

we used to chuck 450cc's in the hondas and wind it back to around -40% but itd advance the timing mega so had to retard at dizzy = rough...

chuck a evo cooler on it or something with 2.5" pipes or 3"(to big?)

lastly, what would be a good suspension setup for CHEAP that would be sufficient for track work.. i know coilovers are best and i will probly have to save for that anyway, but is there anyother way around that option (other than choppies)

ill be doing all the work myself so no labour worries, and car parts over here (NZ) are quite abit cheaper than over there :boobies2:

any other suggestions?

cheers guys

[BHDave]

Fuel pump would be pretty important, particularly with the bigger injectors.

With the turbos you have listed i'd say you'll be aiming for a bit under 200rwkw which the stock injectors could stretch to with a rising rate reg. You could then use the safc to tune the on boost area only and not have to worry about the bottom end.

R32's generally maintain decent A/F ratios with the stock ecu at higher boost, they are nowhere near as bad as 33's.

2.5 inch piping would be fine, the stock piping is only slightly smaller than 2.5 anyway.

I'd be leaning toward the rb25 turbo but as it has ceramic exhaust wheels it may not last too long in a drifter.

[Cool Hand Luke]

The biggest improvements i found with my 20 were a s2 rb25 turbo and getting a re-mapped ecu which was done by dr drift i think. The ecu netted the biggest overall gain tho, mid-range and throttle response were greatly increased, as were fuel economy and top end power, but wouldnt've been such a good upgrade with out the 25 turbo.

I think value for money you'd be better off buying a re-mapped ecu in trade for your stock one rather than the safc...

What about a gtr cooler?

Im sure if you did a search you could find the VG30 A/R's

[Sydneykid]

A $1,000 budget, hmmmmm....this is what I would do

1. Jaycar IEBC, DFA and Hand Controller $200

2. Used Jap 3" exhaust, $300

3. R34GTT Intercooler $150

4. R33GTST turbo $350

There is your $1,000 spent, you have to tunre it of course, but 160 rwkw should be achieveable.

As for suspension, I would get a pair of Whiteline adjustable stabiliser bars, 27mm for the front and 24 mm for the rear. For drifting, set the front on soft and the rear of hard and get into it. Add a set of caster bushes and you have change from $600. Best bang for buck suspension mod ever.

Hope that was of some hlep:cheers:

[CerealKiller]

get an RB25 turbo instead of the VG30, on a RB20 the VG30 will be an absolute dog off boost.

You can get the ECU remapped by Dr Drift, from memory the boost is up to 1 bar.

Use a GTR cooler rather than an EVO cooler, not sure why you would want to use an EVO one on a Skyline...

You'll be very VERY lucky to do all this with only $1K. You'll need to change your fuel pump too if you want your engine to last.

If it were me I'd focus on handles rather than power. RB20's suck for power, ain't that right Roy?

[1598cc]

cheers guys.. yeh ive actually gotta EP-ROM burner here at the moment, but doubt Dr Drift would just chuck me the map for me to burn meself.. side note; what octane gas you guys use ? no doubt tho that chipping the ecu's is the best way to go as i upgraded to that on the hondas after the safc's and the difference was amazing for a 15$ chip and only on a basemap.

what did you end up paying for the chipping and was that him socketing the ECU and burning the chip, or just giving you the chip.

ill look out for a rb25 turbo then, but might chuck the rx7 turbo on to see what sorta gains that provides over the stock one just as a reference for people.

GTR coolers are quite expensive, and can score evo 4-6 cooler for 300$.

cheers for the info aye; helps alot .

[yogi000]

As for suspension, I would get a pair of Whiteline adjustable stabiliser bars, 27mm for the front and 24 mm for the rear.  For drifting, set the front on soft and the rear of hard and get into it.  Add a set of caster bushes and you have change from $600.   Best bang for buck suspension mod ever.

Hey Sydkid,

what would be the best setup with the whiteline sway bars on an r32 for street??? both on soft???? I just bought a pair from a group buy and am about to fit them. What do u think?

Thanks

George

[FATAZZ]

would i be worth while putting a Series 2 rb25 turbo compressor cover and compressor wheel onto the std rb20 turbo? will it bolt up?

[BHDave]

Yeah, it'll fit. You basically end up with a S1 r33 turbo so it'd be cheaper to just buy an rb25 turbo.

[Remix-]

Save for the coil overs dood.