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  • 4 weeks later...

hahahahaha nah man im flat out tuning the radio lol... like sumone else i know

and yeh y not tis fun to waste fuel.

o also im not doing the exhaust redmans will be doing that for me

Edited by skylinekid

have had set backs with the head.... basically previous machinist needs to be shot..... are goin with a whole new setup still in the process of deciding wat to go with....

one thing i will say tho paul from red r racing is one of the most helpful guys ive ever come across in this business and a nice bloke to boot. so neone who is thinking of gettin an engine built give paul a pm. not that he doesnt have enough on his plate already lol. you wont be disappointed.

this will give you some idea of what we came up against with the head

http://www.skylinesaustralia.com/forums/Rb...es-t205992.html

all sorted now...two options...

we buy the head with all the JUN gear in it, sell the cams and port it

or we start with the other stock head you have and we do it our way.

cheers for the wrap Simon...after the last two days of stress and head scratching its appreciated.

Guys,

don't use JUN cams. I don't know if there is some secret to getting them set up properly but they destroyed my 7k head. The small base circle on JUN cams makes for tall shims and they pop out of the buckets. This happened to me with only 550rwhp, 1.2 bar, 8000rpm and 3000kms. Really did waste a beautifully ported and polished head (lifters cracked and got out of round damaging the cast).

Another one on the build at the moment with Tomei cams, lifters and the rest of the fruit.

Paul,

once this is out of the way will be looking to get that NPC clutch for the box i brought off ya.

Cheers

Guys,

don't use JUN cams. I don't know if there is some secret to getting them set up properly but they destroyed my 7k head. The small base circle on JUN cams makes for tall shims and they pop out of the buckets. This happened to me with only 550rwhp, 1.2 bar, 8000rpm and 3000kms. Really did waste a beautifully ported and polished head (lifters cracked and got out of round damaging the cast).

Another one on the build at the moment with Tomei cams, lifters and the rest of the fruit.

Paul,

once this is out of the way will be looking to get that NPC clutch for the box i brought off ya.

Cheers

Yes there is a secret to setting them up...its called knowing what your doing...lol

You run the thicker Tomei buckets so you have to don't run excessively thick shims to get the lifter clearance correct. I run the 29mm base circle cams, the thicker Tomei buckets with the offset JUN titanium retainers and rev mine to 9500rpm all day....not an issue if the engine builder has an understanding of how things have to work together to get the engine to stay together.

yeah i shoulda run the Tomei buckets, i did think about it. Didn't think i'd need them with only 10.8mm of lift. How come JUN don't make suitable buckets anyway?

I did run JUN Titanium retainers but don't know if they were offset of not. I brought a kit, cams, retainers and springs. One would think the retainers were suitable for the spec of the cam shafts.

yeah i shoulda run the Tomei buckets, i did think about it. Didn't think i'd need them with only 10.8mm of lift. How come JUN don't make suitable buckets anyway?

I did run JUN Titanium retainers but don't know if they were offset of not. I brought a kit, cams, retainers and springs. One would think the retainers were suitable for the spec of the cam shafts.

the retainers would have been right....were they silver or gold?....its the lifter buckets that would have been lacking

I ask myself the same question everytime i do one of these why JUN don't make the buckets to suit...as it allows the chance of an 'incident' like your to occur when these products are being installed by the uninitiated.

Edited by DiRTgarage

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