InfraRedline

iTrader: (4)

I have a friend with nitrous on his cobra...$60 for a decent night of racing lol but its cheaper for now than him buying a SC or turbo setup. To each their own.

advise

iTrader: (3)

think i found the root of my problem
is it possible that my springs binding on the head casting is causing it to flex the spring at an angle and the rocker then hits the retainer
need help get new reatiners or go for the new supertech 75lb springs

advise

iTrader: (3)

heres a thread about someone seeing the springs contact the head
https://www.cobaltss.net/forums/2-0l...inside-255190/

mrbelvedere

iTrader: (3)

that is a common problem all you need to do is relieve the head as for the retainers I would just smoth them out and roll with them

advise

iTrader: (3)

Mrb you think the clearance in the pocket is causing my contact on the retainers?

zrated89

iTrader: (15)

i know the older supertechs had that issue where the head had to be clearanced

advise

iTrader: (3)

Is that the root cause of my rocker retainer contact

Powell Race Parts

iTrader: (3)

good post and info Advise, I stand corrected. I wonder what the age of the heads are; could be casting issues, could be supertech specs are out but based on what I know I would bet supertech are the same as they ever were. Worth a call to ask I suppose they are very helpful there. Cmiller clearanced his LNF head and I imagine you could do the same thing... the LSJ guy doesnt indicate any issues with retainer contact?

Also I ran supertechs since 2007 never had an issue before or since, other than LNF rocker contact most recently.

advise

iTrader: (3)

I think that the clearance issue is causing the spring to bind under high rpm causing the rocker to contact the retainer

Powell Race Parts

iTrader: (3)

we measured the contact of the rocker to the retainer. its in contact with the valve closed.

advise

iTrader: (3)

what should the clearance be ?
and obvious you'd measure it with the cams installed

07MetallicSC

iTrader: (16)

So the one I bought comes with a 2.6 ....

80s and brfpr needed? Also currently I'm spraying water meth pre blower. Is this still ok with tvs or not recommended?

100% METH

iTrader: (3)

If you're on 91 or greater, water/meth and 80s are all you need on a 2.6

1000s & reg. is recommended if you run e85 using that pulley.

Water methanol is safe to use with the tvs. Coating and destroying needle bearings are nothing more than wives tales.

InfraRedline

iTrader: (4)

Ill take that 2.6 off your hands lol

100% METH

iTrader: (3)

Want mine Taylor? I dont plan on using it.

07MetallicSC

iTrader: (16)

All I need is 80s and a retune and larger nozzle? Sweeeet.

I've already proved 50k miles worth of meth pre blower does nothing to coating despite what others have said. But I'm sure you already have fought those battles as well lol.

Where's the best place to pick up 80s

07MetallicSC

iTrader: (16)

Oh, also run 93 shell only in her

100% METH

iTrader: (3)

Nearly tripled... 126k through mine.

Zzp

Powell Race Parts

iTrader: (3)

meth will seize your bypass eventually. its not needed and a pita in my opinion.
anything over 300 on these fwd cars is a waste of gasoline and tires lol

Bluelightning

iTrader: (8)

Talk to Josh at OTTP too for 80's. He's always good for deals.

574

iTrader: (5)

I'll sell you my 80's in a couple weeks. They are zrateds 12.0 injectors, that ups the value right...?

07MetallicSC

iTrader: (16)

574 keep me in mind for sure! Orings and Harness too?

574

iTrader: (5)

Yeseh. Getting the 1000's so I am gonna be modding my stock harness

armcclure

iTrader: (2)

That's why I plan on running a solid motor with te m62 on top. Once I'm done dynoing, pull it back to 300 motor and keep the happy juice for high speed encounters
On the track of course.

advise

iTrader: (3)

Beat me to it lol, keeping my springs so injectors may be purchased this week
Just gunna mod what I have with new retainers