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Home > 998cc > double valve springs

hansvdb

6 Posts
Member #: 946
Junior Member

Netherlands

25th May, 2006 at 11:21:37am

I've got the following question

Is it necessary to add double valve springs into the cilinderhead of a 1 litre turbo.

Are they usefull??

Kind regards

Hans

wil_h

User Avatar

9258 Posts
Member #: 123
Post Whore

Betwix Harrogate and York

25th May, 2006 at 12:11:46pm

It's really a question of what spring-rate you have, rather than how many springs you need to achieve it.

I have double springs on mine, but I'll be honest and say I don't know what spring rate they are.

Wil

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

www.twin-turbo.co.uk

On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination,
talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol

On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry.


hansvdb

6 Posts
Member #: 946
Junior Member

Netherlands

26th May, 2006 at 11:37:56am

how do I know which springs rate I need for a specific cam?

hansvdb

6 Posts
Member #: 946
Junior Member

Netherlands

29th May, 2006 at 05:11:23pm

So if I use SW5 cam, than I have to use SW5 spring.

On their site I only see double valve springs, so that should mean automaticly that double valve springs are needed??
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