new here with r30

[DeeZ_NutZ]

hi there i just got my self an 87 r30 skyline a week or two ago in pritty bad shape.

there was no starter motor, alternator wiring, fan, and it hadent been started in eight months. so far i managed to buy a new starter for it and wire up the alternator but for some reason i have no reverse and it doesnt rev past 2,000rpm

i was just wondering if any one knew whats goin. any help would be apreciated

[The Dan]

Auto or Manual?

[DeeZ_NutZ]

ohhh its an auto. and the battery was put on backward accidently by one of my mates helping me fix the thimg

[The Dan]

sounds like it may be in limp mode.

When you have it in neutral can you free rev it past 2000rpm or does it not go up that far?

Also does it appear to rev freely or is there some restriction to it's smoothness?

[DeeZ_NutZ]

2000rpm is the highest it'll go and it does strugle a bit to get there. also if i lift off really quickly it just dies.. i was thinkin it was the air flow meter but it reacted diferently when i took that off just gonna take it to work so the boss can analize it i thoght maby puttin the battery on backwards may have stuffed it

[The Dan]

probably has.

So it won't rev past 2000 in neutral or in gear and it's hard to get there anyway.

Have you checked timing and all the other basics?

Do a flow and pressure test on the fuel pump also. This could be a reason for it not revving very well.

[DeeZ_NutZ]

im pritty sure timming's alright might be out by like 2 degrees not too much. how would u test the fuel pump? is it intank?

[The Dan]

disconnect one of the lines and put it into a bottle. Then crank it for 30 seconds (exactly)

double it, then double it again coz fuel flow is only around half during cranking.

You should get around 2 litres per minute.

after 30 seconds of cranking you should see about half a litre in the bottle, maybe more.

that will equate to around 2 litres per minute.

[The Dan]

make sure you disconnect the fuel line in and not the return line. Easiest way to tell is the one that comes off the filter is the line in.

[DeeZ_NutZ]

hey tryed the fuel pump test and it's fine but i found out that No. 1 cyl is not firing due to lack of compression and when accualy driving it revs past 2,000rpm just when in neutral it doesnt and also i just found out i have a r31 not r30 my mistake :Oops:

[stu_r30]

yeah was just looking at this thread, wondering why an r31 was being called a '30

but anyway... sounds like a rebuild on the cards....or a conversion *hint*

[DeeZ_NutZ]

well tinking of maby an rb20 or rb25 but im unsure of the costs do they require custom engine mounts and wiring looms etc... or is it more of a straight swap?

[stu_r30]

since its an rb coming out and another rb goin in it will be a clean swap

just have to look at 'other' costs like exh mods, tailshaft, cooler piping, power steering, possible brake upgrade, computer, wiring, engineering(unless your sneaky) the list goes on

but dont let me deter ya... the payoff is worth it

[DeeZ_NutZ]

what would be the advantage to a 20 over a 25 do they rev higher or something? im thinkin of tuning it into a drifter thats why i wanna get it up and runnin so i can accualy drive it and get a feel of how the thing handels that way i can deturmine weather it would work