Valve spring comparison- Stock, HKS, BC1100

[BogusSVO]

Valve spring comparison
BC1100 HKS Stock


The line up is (L to R)
BC1100 (NIB)
HKS Single appox 10k miles used
Stock 2G appox 140k miles Used
Kia Looked like a 4G mutant Head, ? miles Used

You must be logged in to view this image or video.

Used Stock 2g spring

You must be logged in to view this image or video.

55lbs @ 1.530

Kia used spring

You must be logged in to view this image or video.

58lbs @ 1.530

HKS

You must be logged in to view this image or video.

60LBS @ 1.530


BC1100 New

You must be logged in to view this image or video.

74 lbs @ 1.530



I know it is a bit unfair to check a new spring against 3 used springs.
But this is what I had on hand at the time, I do have 2 sets of used BC1100 springs, and I will test them and post what I find with them shortly.

More Valve spring Info

http://www.dsmtuners.com/forums/newbie-forum/341209-4g63t-valve-spring-info.html

 

[mysticj]

Kia springs from the optima?

 

[BogusSVO]

Kia springs from the optima?

Could have been, It was not here long enough for me to really look into it.

 

[bastarddsm]

What are they at .400" lift? Is 1.530 a typicaly dsm installed height? I had the Crower Cams& Equip Co springs and they were like 48 at 1.500" and my worn stockers were 52!

 

[BogusSVO]

1.530 is common to what I have been finding with spring installed heights.

I did not do a Valve open measurement, But I will and post what I find.

 

[Raymond1927]

I'll be waiting for results

 

[mysticj]

Could have been, It was not here long enough for me to really look into it.

Most likely, looks exactly like the Hyundai/Kia G4JS valve springs. Most guys swaps those springs out for Evo springs/retainers as they believe the G4JS springs cannot handle the lift specs of most Evo aftermarket cams and higher rev range.