HRF V300 Inner shim kit install

[Shorty]

yaris solid lifter pics, this is the biggest of the range for the 1 liter engine, the 1.3 desil also uses them, this is 5.68 the desil goes up to 5.78 but i cnat yet confirm if the dimensions are the same, however this is not bigenough for the cruise cams so i will prob buy a diesil lifter and measure the dimensions.

as corectly understood mate the nipple is ground to alter the clearence not the top face

 

[GaryGT]

arent daves cams tighe cams???????


and if the hrf kit is called an inner shim kit, i'm pretty certain that the chances are shims will need to be used.
either way, you cant decide until you've fully assembled the head and checked out the clearances.

in others words ur not talking from experience mate??
take advice from guys that have experience and dont be guessing


Take a look at the solid bucket and take a look at the valve contact point!!
if you measure this with Micrometer it will tell you what you have regarding shim thickness!
My advice measure all the buckets to make sure of ur sizes


regards

G

regards

G

 

[Shorty]

as above, measure from the bottom of the bucket to the top of the contact point then measure the whole bucket subtract the first measurement from the second and it will give you the measurement of the shim thickness, as before the contact point is machined down when more clearance is needed the same as a shim is skimmed to lower clearance. the buckets are without doubt the better out of the two options you have as you cant spit the bucket out at high rpm like a shim can meaning a safer build

 

[NosydneW]

Ok ,..I will do that and a will update you guys when done !!

Gonna finish taking the stardard 4efte out first !!

 

[350ep70gr]

Sorry for the delay mate..just got your pm.

I am building a head right now for someone with hrf kit and daves cams. You dont use ANY shims under the bucket with them.If you press the retainer with a shim at oem dimensions you have a higher chanche to unlock the valve and drop it inside.The bucket should ONLY touch the valve steam and nothing else.That why it is a small stem under the bucket.To press the valve. To adjust the clearence it is really a nightmare with them as most of them (at least at the kit i have)(14 out of 16) are the exactly same size. (height). What i did was to install them...install the cams...mesure the clearences...and then adjust from the valve stem by flat gringing it.(it was easier to me because i have modified valves so it wasnt out of the plans). For your situation what you can do is to mesure them and see what the size the buckets need to be...if then you need shorter one you can grind the step under the bucket or the valve stem.If you need longer then your best choise is to buy a yaris one at the size you need or grind the valve seat (wich is not recomended) or add a small bike shim (kawasaki) machined to fit the retainer.
It really depends what clearence numbers you get soyou can make the right choise wich route you need to follow.
Tigh springs i dont know them but hrf are between oem and cruise in terms of base pressure they give in a specific valve height.
With the ivans tighe cams i would use the supplyed springs by them and just would make the at about equal all over.

Chris

 

[NosydneW]

Ok nice,..

and what are the specs of the clearances? Should I use 5EFE or 4efe clearance specs or purely 4EFTE clearances ?

I am gonna measure them today if possible.

 

[350ep70gr]

For valve clearence use for intake valves 0.15-0.25mm and for exhaust valves 0.31-0,41mm. If you drive most of the time mormaly use the lower numbers. If the car is most of the time near to full throtle then use the higher numbers for safety reasons.

Chris

 

[NosydneW]

thanks Chris I will check today.

 

[NosydneW]

Bad News.

I installed HRF springs..retainers buckets and torqued down the cams. Non of the clearances were acceptable like we all expected. But biggest problem was the fact that none of the buckets were touching the valve stem. the valve contact point inside the HRF buckets are to short to touch the valve top.
SOme of the buckets gave no clearance at all so the were pressing on the retainer without touching the valve top.

if you look under the head you can feel some of the valve just hanging there loose as if the retainers were not attached..very strange.

Basically I could not get to the point of measuring cause buckets have to small contact points inside.

For now I will use the thighe cams and springs combo....and i will test the HRF kit on another head.
maybe I will send a head to you Chris,..... with daves with cams and hrf kit ...you are more experienced with these stuff.

 

[NosydneW]

One more thing,

I installed the Tighe cams and springs. Cleareances for intake are 0.20 mm and some of them 0.25mm
I think that's good enough but does the all have to be exacly the same? Like 0.25mm ?

exhaust clearances varies from 0.35mm to 0.30mm...but 4 of them are 0.25mm

This is the point where I will have to take the shims out and measure them and buy some other shims right?

Can someone explain this procedure ? 0.25mm clearance and I want 0.35 clearance...shims to buy are 0.10mm thinner ?

 

[350ep70gr]

Idealy all intake valves should be the same..but dont harm if all are .20 and 4 are .25. You can leave this side as it is.
For the exhaust side..yes you are right ..you need to take out the shim ...mesure it..and buy a .10 thinner one.

Now HRF kit is a nightmare with oem valves..and neither to your other head will be a straight fit. Your best choise would be to go oversize valves and remachine the new stems to accept the hrf kit..

 

[NosydneW]

Pffff.....If I knew this ...

I would have gone that route....

Ok I will take care of the exhaust side for now. And I will let you know how it goes.

I'm gonna drop you a pm !!