RB26 camshafts in RB20??

[Cubes]

I didn't think you could adj. the cam timing without having to remove the CAS in the first place? hence putting it back you will have to set the base timing.

[Fitzpatrick Speed Works]

you cant but often the novice thinks that if the cas has gone back in the same spot thats close enough!! It often is close but you still must reset it every time!!!

[jnr32r]

When you say reset, do you mean at 20 degrees at 750rpm?

[Fitzpatrick Speed Works]

sure do mate, with a timning light, i think that the rb20 is set at 20 deg i know the rb25 is 15 and the rb26 is 20 deg, someone here im sure can give you a solid answer!!!

[bbenny]

Update on installation:

All going well till about 8pm last night when i snapped one of the damn clamp bolts into the head! there is a noticable size difference between the GTR and standard cams, so ill be interested to see how it goes.

Hopefully i can get this broken bolt out thismorn and find a replacement.

I have decided against adj cam gears as i beleive i will need bigger injectors after installing these cams and winding some boost in.

I will post "seat-of-the-pants" results later today, and hope to get a dyno run, either tomorrow or early next week.

[Angry]

I just wanna make sure of something b4 i purchase my cams...

Does/ or should i say Can this mod apply to ALL rb20's?

i'm just not aware of any apparent differences the red top head and the silver top have... if any at all.

Hopefully so.. it will go nicely with the gtr fuel pump and injectors i have ready to go with.

Thanks.

[Chris32]

Update on installation:

All going well till about 8pm last night when i snapped one of the damn clamp bolts into the head! there is a noticable size difference between the GTR and standard cams, so ill be interested to see how it goes.

Hopefully i can get this broken bolt out thismorn and find a replacement.

I have decided against adj cam gears as i beleive i will need bigger injectors after installing these cams and winding some boost in.

I will post "seat-of-the-pants" results later today, and hope to get a dyno run, either tomorrow or early next week.

hows it all going bbenny? I am getting very toey now, can't wait. Got my S/S exhaust manifold the other day as well, so the puzzle is nearing completion

Microtech LT-12S then time to fit it all up, and add about 18-20psi boost

Chris

[Chris32]

I just wanna make sure of something b4 i purchase my cams...  

Does/ or should i say Can this mod apply to ALL rb20's?  

i'm just not aware of any apparent differences the red top head and the silver top have... if any at all.

Hopefully so.. it will go nicely with the gtr fuel pump and injectors i have ready to go with.

Thanks.

Hopefully SK reads this, he might have a better idea............

[bbenny]

Well im need of urgent advice.

I have installed the cams and when i started the car it was fairly lumpy then the idle rmp drops and the engine dies out.

Now when i start the car, it just immediately dies out!

anyone got any ideas whats going on? Sydneykid?

thanks!

[Sydneykid]

Checked the igntion timing?

[bbenny]

nope dont have a timing light, planned on taking it to the workshop in the morn.

i did refit the CAS in the marked area it was before.

should i try turning it lightly just to see if i can get it to stay awake to at least limp it to the workshop?

[bbenny]

i also noticed that the inlet cam was much harder to turn for slight adjustment than the exhaust cam...

[Sydneykid]

Hi BBENNY, I takes a while for the ECU to learn the new airflow requirements. An ECU reset might help as well. Does it run OK? If you open the throttle a little, does it keep running? Make any noises? Starts OK? No hydraulic tappet noises? Backfiring?

If that all checks out, take it for a drive. Any damage is already done anyway.

[bbenny]

it runs fine when i give it some throttle, i havent driven it yet, but it wont hold idle no matter what position the CAS is at, it dies out pretty soon.

sometimes it starts, but most of the time it will turn over a few times then die out straight away.

there are no strange noises, infact it sounds pretty sexy with a bit of throttle

How do i reset the ECU?

[RBVS]

disconect the battery, then drain the remaning power buy putting head lights on radio and foot on the break then reconnect the battery.

[jnr32r]

any luck bbenny?

just curious, in a car fitted with a PFC if you reset the ecu, you loose the whole tune. So is it really necessary to reset it?

I understand it will probably need another tune for it to run efficiently but i thought it would be a in/out process. just a better flowing head.

[armbrusb]

This might sound dump, but did you make sure you plugged your AFM back in?

[bbenny]

yeah i think its more than just ECU, i noticed once the cams were installed that i could turn the ex cam very easily to adjust it to no1 TDC, however the in. cam was very stiff to turn in comparison, so just to double check i threw the standard cam back into position and if felt just as stiff...

i think my problem stems from the inlet cam being very difficult to turn over and that causing the engine to stall at idle.

[armbrusb]

Did you put the bridges back on in the correct order - no. 1 is at the front of the engine? Did you do the bolts up to the same tenstion on in in cam and ex cam?

[Cubes]

Maybe slap the stocker inlet back in and see how the tension feels.

Might have a stuffed inlet cam.