MiniSpares/Titan full roller rockers
Turbo Mini Forums

Ive been running these on the Sprint for 10 years now

http://www.minispares.com/Product.aspx?ty=...201.5%20RATIO...

and have just stripped down the assy to check for wear on the shaft, there isnt any Im pleased to find.

I was thinking of reassembling them with springs instead of spacers like Swiftys ones (pic is shown but no listing atm)

http://www.swiftune.com/Category/57/cylinder-head.aspx

What are your thoughts?

Paul

I seriously doubt it!

Look Paul, your becoming a fooking tiresome bore with all your silly petty weight saving ideas,
get out and get a life will you,lol


carl

WWW.FORCE-RACING.CO.UK PLEASE CLICK HERE

lol Carl.
I was thinking more of friction actually. The sides of the rockers are marked up which shows friction. Swifty obviously uses springs for a good reason.











<-------- look, 7 times class C winner, says it all

Edited by paul wiginton on 3rd Jan, 2010.

I seriously doubt it!

Worth a try paul. If it's shit swap back.

If something is worth doing, it's worth doing half of.

The springs have two purposes.

They apparently dampen noise a little ( not that that matters to you, lol)

And they allow you to service the valve springs and push rod with the head still on the engine

Not that anyone uses the latter anymore as springs dont break any more, but I have used it to good effect once to replace a bent spring.

If they are lighter, use them. The spacers can bind when the engine is up to temp, if the clearancies have not been checked, and usualy allow the rockers to move that little bit. The spring will stop the rocker moving about on the shaft.

well Sprocket I never thought of than sliding them to one side whilst filling the engine with air... simple when you think about it.

I run a supercharger and I don't care the TB is on the wrong side.
VEMS + 12 PSI + Liquid Intercooler = Small Bore FUN!

Thats a very good answer Sprocket, I was worried that the rocker could slide along and fall off the valve at very high revs, but the pushrod cup should stop that.

I seriously doubt it!

i think its crower that fit spacers to the shaft instead of springs to stop the sideways movement on some v8's?

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

I thought the idea of the solid spacers was to do away with the side loading friction caused by the (light) springs?

Thats what I thought Tom, but since Ive been getting side load even though there is clearance, I wondered if the spring would 'give' a bit unlike a solid spacer.
I was reading some time ago that a spring worked out to be better, though I cant remember where, who wrote it or why

I seriously doubt it!

How can you get side load with the proper spacers?The spacers WILL rattle about and leave marks, but that has got to be little... I consequently use springs on all my builds I cannot see one reason not to.

If I remember V Ill take some pics tomorrow, its not just marks on the anodising, its worn right through it and made a small step in the alloy between the rockers and the posts.

Paul

I seriously doubt it!

Kalver has an article in last months minimag all about high lift rockers, and he mentions that when 'he' specified the Minispares rockers, they were to use the springs because of the issues of binding and missalignment of the rocker posts, which would require a larger clearance.

Thats similar to what I read except it was months ago.
I dont know if it makes any difference between bronze bearings and the full rollers that I have

I seriously doubt it!

Is it 5/8" instead of 9/16"?? The Titan ones have had this for 20years.

Would you replace the spacers with springs off a standard rocker assembley?

New std ones

I seriously doubt it!

I decided I was going to leave the spacers as I hadnt realised how long the springs were. I thought it would put a lot of side load on the rockers.
Just read Vizards book on them and he says the side load is more or less immeasureable and that little bit more from the spring is actually beneficial.
Dont know again now.

Paul

I seriously doubt it!

Springs are much lighter.
They don't consume measurable power vs spacers.
They allow you to remove pushrods without dismantling the shaft.

Really, I cant see a reason to use spacers.

There are other applications where I can understand the need for a spacer.

On Renault 8's, the Cléon engines, the valves are not inline with the pushrod, the rockers seen from the top is like that : _
So here you have a momentum on the axis so you need spacers as soon as you get to high rpm's but on the A-series they are straight (__) so I can't see why it would be required ...

Rusty by nature

Its about 35g saving but Viz says the spring stabilizes the valve train by virtue of the rocker being tight against the post.

Paul

I seriously doubt it!

Try it for one year Paul, its not as if your life depends on it, then you can make an experienced decision :)

If they were just roller tips I wouldnt think twice about it, but I dont know if it makes a difference that mine are full rollers

Paul

I seriously doubt it!

if you think it might be a problem with springs you can keep an eye on them and check after every meeting as per Sprocket post you can check on them?

I run a supercharger and I don't care the TB is on the wrong side.
VEMS + 12 PSI + Liquid Intercooler = Small Bore FUN!