"Nice" head.

jonbills

jonbills

Membership Secretary
Site Administrator
Well, I was only joining in with being "nice" originally, but I do have Schneider springs and caps (from Pete). They were a "nice" price and they work well - I've quite a lot of lift and it revs to 8k happily. (When the plugs aren't carbon fouled)
 
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Alphabettispaghetti

Alphabettispaghetti

Club Member
jonbills said:
Well, I was only joining in with being "nice" originally, but I do have Schneider springs and caps (from Pete ). They were a "nice" price and they work well - I've quite a lot of lift and it tevs to 8k happily. (When the plugs aren't carbon fouled)
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by price point, I mean for the price they're a very good option.
 
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pmac

Well-Known Forum User
jonbills said:
Well, I was only joining in with being "nice" originally, but I do have Schneider springs and caps (from Pete). They were a "nice" price and they work well - I've quite a lot of lift and it revs to 8k happily. (When the plugs aren't carbon fouled)
Click to expand...

Its "nice" to know you are happy with them.:D
 
AliK

AliK

Vehicle Dating Officer
Staff member
Club Member
Found some perfect "nice" Euro-pop that hopefully Sean can feel at home with and perfectly complements what Pete is doing to us with this thread!!


https://youtu.be/veafl2Jv53E

I challenge anyone (except Sean) to make it to the end of the track! ;)
 
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AliK

AliK

Vehicle Dating Officer
Staff member
Club Member
On the way back to the smoke for a few last (family free) days of work then 5 glorious weeks off!
 
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pmac

Well-Known Forum User
ould someone explain why Schneider springs rule?
I've always considered them oversize and over stiff and the matching caps just hold it all together.
Genuine question, not trying to stir things up, maybe I've missed something?
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This engine Tim and myself are building is a fixed price build so price of components is part of it.
The engine has a reprofiled cam which then needs thicker lash pads to give a decent wipe pattern.
Thicker lash pads need a deeper spring cap to hold them.
The matching springs and caps from Schneider are readily available and they are well up to the job.
I know they are a little wider than stock Nissan but a little grinding on some cam towers soon fixes that. On this engine they are installed a little taller than the 1.6 " that Schneider "recommend" so the seat pressure is slightly reduced from Schneiders 110lbs figure. That is fine on this modest cam.
Another reason for my use is that Steve and me have used them in other engines with good results.
So in summary Im using a readily available combo that we have used before at a price that is good value IMO.
All IMHO of course as there are other solutions/parts out there.
 
F

ffastffreddie

Forum User
Hi pmac, thanks for taking the trouble to explain this for me and good answer by the way.
I guess you and others were right about making the price point the real reason for making the compromise and if these springs have proved themselves to you there's no arguing with that.
Do you machine the head in order to give a taller fitted height or is there another way of doing this?
 
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pmac

Well-Known Forum User
Do you machine the head in order to give a taller fitted height or is there another way of doing this?
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Out of the box a Schneider spring is considerably taller than recommended. So I use two outer packer washers where Nissan only have one. To get it to 1.6" installed height and 110lbs pressure would need a custom packer making. We have done this where it was needed in the past but as already said on this mid range road engine it was not deemed neccessary.
As always on a build measuring and then making the appropriate decision is the way forward.:bow:
 
johnymd

johnymd

Club Member
This is probably a real novice question but I'll ask anyway as I don't mind being laughed at. If the spring is too long, plus you use an additional packer, would this not increase the height and so the pressure?
 
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pmac

Well-Known Forum User
johnymd said:
This is probably a real novice question but I'll ask anyway as I don't mind being laughed at. If the spring is too long, plus you use an additional packer, would this not increase the height and so the pressure?
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The spring cap is fixed.
If you add a packer at the bottom then that squeezes the spring up .
Installed height is less and pressure is increased.
Installed height refers to the spring only. installed length of spring is maybe a better word to use.

Im never going to laugh at anyone who genuinely wants to learn more.
Its what Tim, Steve n me are about.
 
P

pmac

Well-Known Forum User
johnymd said:
Thanks Pete. Every day can be a school day.
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Yep! There will be some school days here too as some or maybe all of us get to grips with K series 1.8 VVC engines:D

When this head is all built up and installed you are going to regret selling it even more:devil:

:rofl::rofl::rofl:





PS ..wanna buy the carbs back now I have made them a matching numbers set with "nice" new adjustable linkages???;)
 
Albrecht

Albrecht

Well-Known Forum User
pmac said:
The spring cap is fixed.
Click to expand...

...by the valve. Which could be anywhere, depending on what valve it is, what seat it is sitting in, where the spring collet grooves are on the valve, what spring collets are used and what head the whole lot is installed in.

"Them bones, them bones, them dry bones..."
 
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pmac

Well-Known Forum User
Albrecht said:
...by the valve. Which could be anywhere, depending on what valve it is, what seat it is sitting in, where the spring collet grooves are on the valve, what spring collets are used and what head the whole lot is installed in.

"Them bones, them bones, them dry bones..."
Click to expand...

Yep agreed.
They need to be measured.
 
P

pmac

Well-Known Forum User
Look at the wear/wipe pattern on this finger. This is what happens with a modified cam if you dont get the correct lash pad size. The wipe is way off centre and on this example might have been off the end of the rocker pad.
 

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