Jump to content
SAU Community

Recommended Posts

  • Replies 285
  • Created
  • Last Reply

Top Posters In This Topic

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.

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.

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

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............

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!

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?

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.

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 :rant:

How do i reset the ECU?

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.

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.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Have a look at that (shitty) pic I posted. You can see AN -4 braided line coming to a -4 to 1/8 BSPT adapter, into a 1/8 BSPT T piece. The Haltech pressure sender is screwed into the long arm of the sender and factory sender (pre your pic) into the T side. You can also see the cable tie holding the whole contraption in place. Is it better than mounting the sender direct to your engine fitting......yes because it removes that vibration as the engine revs out 50 times every lap and that factory sender is pretty big. Is it necessary for you......well I've got no idea, I just don't like something important failing twice so over-engineer it to the moon!
    • Yup. You can get creative and make a sort of "bracket" with cable ties. Put 2 around the sender with a third passing underneath them strapped down against the sender. Then that third one is able to be passed through some hole at right angles to the orientation of the sender. Or some variation on the theme. Yes.... ummm, with caveats? I mean, the sender is BSP and you would likely have AN stuff on the hose, so yes, there would be the adapter you mention. But the block end will either be 1/8 NPT if that thread is still OK in there, or you can drill and tap it out to 1/4 BSP or NPT and use appropriate adapter there. As it stands, your mention of 1/8 BSPT male seems... wrong for the 1/8 NPT female it has to go into. The hose will be better, because even with the bush, the mass of the sender will be "hanging" off a hard threaded connection and will add some stress/strain to that. It might fail in the future. The hose eliminates almost all such risk - but adds in several more threaded connections to leak from! It really should be tapered, but it looks very long in that photo with no taper visible. If you have it in hand you should be able to see if it tapered or not. There technically is no possibility of a mechanical seal with a parallel male in a parallel female, so it is hard to believe that it is parallel male, but weirder things have happened. Maybe it's meant to seat on some surface when screwed in on the original installation? Anyway, at that thread size, parallel in parallel, with tape and goop, will seal just fine.
    • How do you propose I cable tie this: To something securely? Is it really just a case of finding a couple of holes and ziptying it there so it never goes flying or starts dangling around, more or less? Then run a 1/8 BSP Female to [hose adapter of choice?/AN?] and then the opposing fitting at the bush-into-oil-block end? being the hose-into-realistically likely a 1/8 BSPT male) Is this going to provide any real benefit over using a stainless/steel 1/4 to 1/8 BSPT reducing bush? I am making the assumption the OEM sender is BSPT not BSPP/BSP
    • I fashioned a ramp out of a couple of pieces of 140x35 lumber, to get the bumper up slightly, and then one of these is what I use
    • I wouldn't worry about dissimilar metal corrosion, should you just buy/make a steel replacement. There will be thread tape and sealant compound between the metals. The few little spots where they touch each other will be deep inside the joint, unable to get wet. And the alloy block is much much larger than a small steel fitting, so there is plenty of "sacrificial" capacity there. Any bush you put in there will be dissimilar anyway. Either steel or brass. Maybe stainless. All of them are different to the other parts in the chain. But what I said above still applies.
×
×
  • Create New...