Decompression plate questions.... - Page 2 - Saxperience

NismoSteve · 10th December 2011, 17:52

That's a ridiculous ammount for forged pistons, I used to get Wiseco forged pistons for the Nissans at £375 a set and they were really good quality.

dannygti · 10th December 2011, 18:20

Quote:

Originally Posted by toger13

ye i use Studs and nuts on mine but on a budget build the money would be best spent elsewhere plus they need to be retorqued every so often not good unless you have jp4 rockers :-)

150 for studs and nuts
150 for decomp plate

how much are forgies nowadays 400?

Si

I don't agree si, think anyone who wants to run around 1bar+ on a Decomp plate a set of head studs is a good idea. Proper clamping force across the head. There's a lot less residual load in the head with normal bolts.

Pistons are around 500+vat as a rule at the minute.

I agree pistons are by far the vest way but it's not just 500+vat is it... It's the. Rebore and hone etc and having to take your engine out for it.

Tannerman · 10th December 2011, 19:27

Ah I was assuming u meant rods aswell

NismoSteve · 10th December 2011, 19:32

Yeah pistons and rods are £849 somewhere I've seen? Plus rebore, gaskets, seals, mains and big ends. A dear do then. And if your going that far There's balancing and a top end rebuild while its apart, lifters and cams lol! Full on rebuild.

Tannerman · 10th December 2011, 19:35

Quote:

Originally Posted by NismoSteve

Yeah pistons and rods are £849 somewhere I've seen? Plus rebore, gaskets, seals, mains and big ends. A dear do then. And if your going that far There's balancing and a top end rebuild while its apart, lifters and cams lol! Full on rebuild.

I ain't that keen....prefer to just keep it at a manageable power.lol

NismoSteve · 10th December 2011, 19:37

decomp plate it is then

Tannerman · 10th December 2011, 19:39

Lol.yeeeeeep

rorz_vts · 10th December 2011, 20:30

I'd go for a decomp first see how you find the power etc then if you want more later buy a spare bottom end and get all the work done whilst you still enjoy your current build.

Thats what I'm doing anyway

NismoSteve · 10th December 2011, 20:32

Quote:

Originally Posted by rorz_vts

I'd go for a decomp first see how you find the power etc then if you want more later buy a spare bottom end and get all the work done whilst you still enjoy your current build.

Thats what I'm doing anyway

+1 that's the way I'm gonna do it too.

e8_pqck · 10th December 2011, 20:45

Quote:

Originally Posted by stevo1600

Thanks blackie, I knew I'd gotten that part wrong.

Yea I'm thinking hg lol. Going for the 2mm.

Danny what you mean head studs? You talking about the two little collars that keep the head lined up on the block? I had trouble when fitting my double hg as they were to short.

2mm HG + 1.9mm decomp will lower compression to much i think and run like a dog off boost. Really no need to go that low.

dannygti · 10th December 2011, 20:47

Quote:

Originally Posted by e8_pqck

2mm HG + 1.9mm decomp will lower compression to much i think and run like a dog off boost. Really no need to go that low.

I agree, 2mm Decomp plate and 1.2 gasket would be better imo

Tannerman · 10th December 2011, 23:19

Fuckin hell why can't it just be easy.lol

blackie_2k5 · 11th December 2011, 01:41

Quote:

Originally Posted by dannygti

I agree, 2mm Decomp plate and 1.2 gasket would be better imo

thats about optimum, thats about what we worked off but i went for 1.4ish

ppl that read my thread must understand the head i had was on bare bones and was only ever going to be a tester as a foot bridge to more, it was already on its limit and i had a light shave done as i knew there was a decomp going on

i have 1.9mm gasket and 2mm decomp, car runs awesome on/off boost, and is lasting alot longer then i thought..

edit- im happy to run a bit more boost at the cost of CR as i dont IDEALLY want it to burst..

blackie_2k5 · 11th December 2011, 01:44

Quote:

Originally Posted by Tannerman

Fuckin hell why can't it just be easy.lol

if it was easy...everyone would be doing it

dannygti · 11th December 2011, 09:32

Quote:

Originally Posted by blackie_2k5

thats about optimum, thats about what we worked off but i went for 1.4ish

ppl that read my thread must understand the head i had was on bare bones and was only ever going to be a tester as a foot bridge to more, it was already on its limit and i had a light shave done as i knew there was a decomp going on

i have 1.9mm gasket and 2mm decomp, car runs awesome on/off boost, and is lasting alot longer then i thought..

edit- im happy to run a bit more boost at the cost of CR as i dont IDEALLY want it to burst..

I'd much rather have higher compression and less boost which is what I am doing.

Tannerman · 11th December 2011, 09:34

Quote:

Originally Posted by blackie_2k5

if it was easy...everyone would be doing it

True...just wish I was a guru then it would be easy.why can't it just be , TURBO-BOLT ON-GO.lol

saxova · 11th December 2011, 09:42

Quote:

Originally Posted by Tannerman

True...just wish I was a guru then it would be easy.why can't it just be , TURBO-BOLT ON-GO.lol

You can just bolt it on and go.

Just how long it will last is the problem

The key to any turbo build is management and a good map.

Tannerman · 11th December 2011, 09:43

I no mate I was kidding.lol.

toger13 · 11th December 2011, 17:53

you could always just get comtic to make you a custom gasket i use a 2.3mm one on mine

Si

blackie_2k5 · 11th December 2011, 20:34

Quote:

Originally Posted by dannygti

I'd much rather have higher compression and less boost which is what I am doing.

what is the CR your running danny, i wouldnt say mine was massivley low, drives fine on and off boost so its all worked out well