Valve Springs

[Adam]

No they don't, there are two different types of heads, one for the T and one for the F6, springs are all that's different.

<{POST_SNAPBACK}>

I don't think the Typhoon runs a different head to the XR6T.

[jetute]

No they don't, there are two different types of heads, one for the T and one for the F6, springs are all that's different.

I don't think the Typhoon runs a different head to the XR6T.

I highly doubt that as well..... would make more sense that the xr6t mk11 and the phoon would have the same springs

[Venom XR6]

No they don't, there are two different types of heads, one for the T and one for the F6, springs are all that's different.

<{POST_SNAPBACK}>

I don't think the Typhoon runs a different head to the XR6T.

<{POST_SNAPBACK}>

Only the springs are different but the head is fitted on line as a whole assembly, hence they are considered different. If you look at the back of the head XR6T's have a spot of red paint, F6's have a spot of blue.

[Adam]

Why the hell would the way it's installed make it considered a different head?

[Adam]

the F6 springs would be a different springs than the orginal XR6T. It would make sense now to just put the same springs in both cars, it would make things easier for Ford and their supplier. That's why I would suggest the part numbers are now the same.

<{POST_SNAPBACK}>

Sorry, but I would have to disagree with you there

The Typhoon runs a pretty low boost, and many XR6T are running 12-14 psi boost with std. springs, so unless you plan to go higher than that, why would you need to change valve springs?

The Typhoon is only running at 8-9 psi boost, so why would Ford bother putting stronger springs into it. lol - no offense

<{POST_SNAPBACK}>

So your saying that the F6 has the same springs as the XR6T.

So infact you are actually agreeing with me.

I'm saying that the stronger F6 springs are now used in the XR6T. It would be pointless for Ford to have 2 different types of springs being made. Much easier just to change over to the stronger springs all round.

[Trough Lolly]

lol... ignore the silly post.

[macka'sxr6t]

No they don't, there are two different types of heads, one for the T and one for the F6, springs are all that's different.

<{POST_SNAPBACK}>

I don't think the Typhoon runs a different head to the XR6T.

<{POST_SNAPBACK}>

Only the springs are different but the head is fitted on line as a whole assembly, hence they are considered different. If you look at the back of the head XR6T's have a spot of red paint, F6's have a spot of blue.

<{POST_SNAPBACK}>

I'm a little confused It makes no sense for Ford would make two moulding processes for their heads. not cost effective

I think what Venom is saying is that the castings are the same but there is different components in them. eg F6 would have slighty different cam grinds and valves and maybe better flowing chambers etc. similar to Boss 260 & 290. Hence the need for the two coloured spots and different production lines so that the T does'nt get the phoon head and visa versa.

Phyisically you should be able to swap heads on each short block.

macka

[mk11tute]

Am pretty sure f6 and xr6t springs have the same part number there for I think that would make them the same!!

[Guest]

Am pretty sure f6 and xr6t springs have the same part number there for I think that would make them the same!!

 

<{POST_SNAPBACK}>

ill agree

[Dannopower]

Am pretty sure f6 and xr6t springs have the same part number there for I think that would make them the same!!

 

ill agree

So, Dynowog, In your experience as an edit tuner, At what point does the mk1 valve springs become the tuning limit of the XR6T?

In realistic rwkw figures? Also at what boost level or is this irrelevant? Im guessing increasing boost pressures would definately affect the springs.

Does it happen to every mk1 6T?

I have heard some tuners are changing them straight away without testing the existing ones, but I have heard that its nonsence to change them with power levels under 260rwkw and 10psi of boost.