Decompression plate help!

1st September 2009, 21:34

Can anyone tell me if £45 for a decompression plate (new) is a good price? and will i have to get the head reskimmed?

1st September 2009, 22:22

If its new, a good brand and the correct thickness for what your after then yes its not a bad price. There are some really poor ones out there you should avoid. The thickness depends on the boost you wish to run, on a very basic turbo setup you will not have to use one at all and really high boost you will wish to use low comp pistons. Head depends on the condition of your head to start with.

1st September 2009, 22:35

Quote:

Originally Posted by AXracing

If its new, a good brand and the correct thickness for what your after then yes its not a bad price. There are some really poor ones out there you should avoid. The thickness depends on the boost you wish to run, on a very basic turbo setup you will not have to use one at all and really high boost you will wish to use low comp pistons. Head depends on the condition of your head to start with.

so as long as i have my fueling set up right from the start it shouldn't matter about the plate, because i am only wanting to run about 5-8 psi. and thanks for the info.

1st September 2009, 23:35

As long as its set will it will be fine but I would be tempted to just run a single thick repair gasket to be on the safe said if your after 8psi

2nd September 2009, 14:47

just to make sure i no that you are talking about the same thing i am thinking of is that the gasket in a tube? and if so would i need the head re-skimmed?

2nd September 2009, 15:02

im going to be running around the same PSI and im just buying a single metal head geasket from GMC at a thickness of 1.9mm

2nd September 2009, 22:18

Quote:

Originally Posted by Saxo_89

im going to be running around the same PSI and im just buying a single metal head geasket from GMC at a thickness of 1.9mm

how much are they? and do you need to get the head re-skimmed?

2nd September 2009, 22:38

if you are worried about the head then get it looked at by a pro, if its in good condition i wouldnt have it skimmed just clean the mating surfaces up, if you get the engine mapped well all will be good jst make sure, if you are going to run a extra injector set up id recomend a decomp plate just to be safe as getting it fuleing right may be a bit of a struggle to start with, and the risk of detonation will be there.

3rd September 2009, 07:17

Where did you get that pricing from?

3rd September 2009, 16:12

Quote:

Originally Posted by miamibluebaby

if you are worried about the head then get it looked at by a pro, if its in good condition i wouldnt have it skimmed just clean the mating surfaces up, if you get the engine mapped well all will be good jst make sure, if you are going to run a extra injector set up id recomend a decomp plate just to be safe as getting it fuleing right may be a bit of a struggle to start with, and the risk of detonation will be there.

i am running larger injectors.

3rd September 2009, 16:13

Quote:

Originally Posted by ukgaz

Where did you get that pricing from?

i was looking through ebay and found it. as i am trying to do a budget set.

3rd September 2009, 16:13

what managment are you going to use??? just curious?

3rd September 2009, 16:20

Quote:

Originally Posted by miamibluebaby

what managment are you going to use??? just curious?

i am waiting to hear back on how much the pred will cost as i am thinking of using that.

3rd September 2009, 16:31

Quote:

Originally Posted by miamibluebaby

what managment are you going to use??? just curious?

or do you no of any other good ones i could use?

3rd September 2009, 17:26

ones for 45 off ebay are spot on mate, i know the lad and got him to make me 1 thats why there on ebay now, he normally does classic mini decomps, theres spot on,

4th September 2009, 09:52

Quote:

Originally Posted by blackie_2k5

ones for 45 off ebay are spot on mate, i know the lad and got him to make me 1 thats why there on ebay now, he normally does classic mini decomps, theres spot on,

thanks for that i was waiting for some to to say they are good. do you have any ideas on what kind of fuel management i should run?

4th September 2009, 19:46

depends on your budget mate

5th September 2009, 23:33

Quote:

Originally Posted by blackie_2k5

depends on your budget mate

a just want to no some good ones i could have a think about thats all. i am looking to be spending about £1000.

6th September 2009, 00:08

in the same boot mate still searching threads hi and low, im gonna use stand alone sigcon,mf2 etc if im understaning it all right this will help the car fuel right and run the extra injector i belive could be wrong still reading up on it all..

i found that decomp plate mite use that seeing as there rated good by other users

also im struggling to find bigger injectors

6th September 2009, 10:42

for around a grand you'd have to go mf2,sigcon and fifth injector but you could go dastek and four bigger injectors aswell as predator standalone IF you can do pretty much all the work yourself and source cheap parts etc/ wait for bargains

6th September 2009, 11:02

going back on what i said i cant find that plate the one i thought was right is a metal one and thats 79.99

would that be up to it

sorry to high jackthread

6th September 2009, 21:45

Quote:

Originally Posted by blackie_2k5

for around a grand you'd have to go mf2,sigcon and fifth injector but you could go dastek and four bigger injectors aswell as predator standalone IF you can do pretty much all the work yourself and source cheap parts etc/ wait for bargains

i have already got some injectors that fit i just hope i can run them. and most of the parts i am getting off friends. so the only hole in my pocket is going to be the fuel management lol.

6th September 2009, 22:27

if you run a mf2 you can map it your self over a weekend saving money again but tbh mate fuleing IS the most important part of any turbo build get that right and you laffin

may just be an idea to spend a lil bit of money on the managment side of things

6th September 2009, 22:31

Quote:

Originally Posted by miamibluebaby

if you run a mf2 you can map it your self over a weekend saving money again but tbh mate fuleing IS the most important part of any turbo build get that right and you laffin

may just be an idea to spend a lil bit of money on the managment side of things

yeah a think i am going to because i dont want to be running my turbo for 2 month and then bang i want to make sure it will last. you got any ideas on management for me?

7th September 2009, 16:45

if you wanna make it last you need forged internals, it will inevitabley go bang on stock, how soon depends on how well set up and how well driven and maintaned it is

7th September 2009, 21:49

Quote:

Originally Posted by blackie_2k5

if you wanna make it last you need forged internals, it will inevitabley go bang on stock, how soon depends on how well set up and how well driven and maintaned it is

well i will only be driving it on normal internals untill i have the money for the forged internals. and i will be taking my time in it and looking after the car like i do now. as i dont want to spend all this money one it then for it to go bang on me.

25th September 2009, 16:07

i will be buying that same decompression plate off ebay mext week the 9cc one. when i get it fitted will i need 2 steel head gasgets? one each side of the decomp plate??

25th September 2009, 16:45

no just one head gasket, head, decomp, h/g, block, you have to bond the decomp to the head

25th September 2009, 17:39

bond the cecomp plate to the head?? how? wat with?

25th September 2009, 23:07

anyone??

25th September 2009, 23:18

Chuddy

25th September 2009, 23:57

ben... wat the hell??

26th September 2009, 08:45

Ha sorry boys. Erm at work we use this blue stuff that is proper sticky and a real bitch to get off your fingers after but carnt member for the life of me what its called.

26th September 2009, 09:20

That would it be hylomars.
Not sure it would be ok to bond a decomp plate to a head

26th September 2009, 10:51

hmmm this is a bit anoyin, everyone suggests a decomp plat but no1 knows what to use to fit it... whats gmc's number?? i will call them and ask.. the might no

26th September 2009, 11:05

http://www.bearingboys.co.uk/Loctite...perature-888-p

http://www.bearingboys.co.uk/Hylomar...__100g-10399-p

26th September 2009, 13:34

hylomars is what most use iirc, is what ill be using

26th September 2009, 13:41

Hylomar blue, gasket & jointing compound. (non setting) universal sealant. resistant to fuels & lubricants,

that stuff? whats it mean by non setting?

27th September 2009, 14:13

would it make eny difference if i just used 2 stee head gasgets ither side of the decomp plate n bolted it down??

27th September 2009, 14:49

that would be seriousley lowering the compression id imagine far two much as the decomp is about 2ml thick anyway

27th September 2009, 19:51

hmm well if i get the 9cc decomp plate of ebay but instead of using the 1.9mm head gasget i can use the 0.6mm each side of the plate so it will be lowering it a bit less than the 0.9mm..

sound like a plan?? lol just realy need to get this on next week so i can run my engine in for 3 weeks before i get my emerald ecu...

28th September 2009, 16:56

1.9 gasket should only be used if your NOT running a decomp, decomp plus standard, dont use two as i think that will lower it too much PLUS your giving youserlf extra layer which could posibley leak, 1 gasket plus decomp = 3 possible layer from which the head could blow... the block side of the gasket....the decomp side of the gasket.... the head side of the decomp, risky but if you do it right itl be ok, 2 gaskets and decomp is 4 possible layer to leak from, you can work that out yourself if you think about it

28th September 2009, 17:13

Quote:

Originally Posted by blackie_2k5

no just one head gasket, head, decomp, h/g, block, you have to bond the decomp to the head

was this a joke???

i looked on ebay at the decompression plate ant it says on their.. be aware that when you calculate you volumes you will need to allow for the use of two head gaskets one either side of the de-compression plate

i called spoox motorsports aswell and aske them about it and they said thats the kind of thing they would expect to hear from a forum... they sed id be crazy to try bond it and they would highly recomend to used a gasget ither side.

28th September 2009, 17:20

also on ebay it says... It is generally considered that a head gasket is worth about 3 CC’s... so that maens 9cc's would = 3

so do you think the 3cc one and a 0.6mm steel head gasget ither side would do?

i no you dont agree with the 2 head gasget idea but i just want to no if you think it would lower the compression enough??

28th September 2009, 17:23

it can be done either way to be fair mate, if your using sealer, hylomar, get the blocke decked, sealer betweenthe block and decomp, then gasket between decomp and head, or can be used with two stadard gaskets, make sure either way, you have measure what your doing, as you wont use the saem decomp plate for both methods, the hylomar method, will require a thicker decomp plate

28th September 2009, 17:30

up to you mate

28th September 2009, 17:33

how thick is the standard gasget?

what thickness do you think would be gd? like mm rom head to block. approx?

will the standard size head bolts still fit after this or will i need longer ones?? same with the cam belt??

28th September 2009, 17:39

satndard bolts will be fine but use new ones, cambelt also, and the decomps he sells are around 2 ml thick for a 9cc increase yes??? so if theyre about the same size as a standard head gasket where does the ohter 6 ccs come from? he said around 3ccs per gasket yeah? well the decomp is the same size as a gasket, i have one!, ppl dont know all they think they do, yeah he may have measured a 9cc decomp but that was for the original add of a classic mini decomp, saxo engines are different, and simply mate all im saying is 2 gaskets imo is a bad idea as you have more chance of it blowing

28th September 2009, 17:41

i would advise gettin the block decked, then get uprated bolts, the standard ones will prob fit, but i would advise torq-n them a little more than what haynes said, if it shift slightly, that will bring on a leak either side of the plate.

i dont know the cc of the car, prob better gettin that off people who have done it that way,

in all honesty, you need to do alot more reading about it before you build the car up and run it, from your other posts, your likely to blow this up very quickly. study it up, before you fuck it up

28th September 2009, 17:46

ill be using the decomp with hylomar and 1 standard head gasket as it will be lowering the compression enough for what i need and have been advised by ppl that have done it this way and have also looked up info on this, thats why i offered my help, if ppl dont want it thats fine, but in the end if you not comfortable you know and understand why your doing things and what exactly your doing you shouldnt be doin it

28th September 2009, 18:01

Quote:

Originally Posted by blackie_2k5

ill be using the decomp with hylomar and 1 standard head gasket as it will be lowering the compression enough for what i need and have been advised by ppl that have done it this way and have also looked up info on this, thats why i offered my help, if ppl dont want it thats fine, but in the end if you not comfortable you know and understand why your doing things and what exactly your doing you shouldnt be doin it

lol look i do appreciate the advice you are giving me, you ben more than helpfull. it just that im getting this done on the w/e but i dont want to rush and do it wrong thats why i have been calling places up. and asking question after question on here to try help me understand. it was a struggle geting advice of peapole about this at first so i just thaught you was unsure urself as you never said that people have done it that way before.

so you know people that have done it the same to their saxos and its worked?

28th September 2009, 18:17

what size decomp plate will you be using?
will you be using a steel head gasget?
what size head gasget will you be using?
how will you go about bonding the decomp plate to the head?

28th September 2009, 18:33

Quote:

Originally Posted by sexoturbs

what size decomp plate will you be using?
will you be using a steel head gasget?
what size head gasget will you be using?
how will you go about bonding the decomp plate to the head?

decomp plate to head is the head gasket mate, decomp to the block is hylomar

unfortunately, the others i dont know, as i dont care bout saxo turbo's haha

28th September 2009, 18:52

hmmm i thaught it would be gasget to the block den decomp thn hylomar

im sure thats what blackie said...

28th September 2009, 19:24

thats the way i was told to do it, a few ahve done it this way, pm gixxa hes running this set up, sure he said bond the decomp to the head and a few others ive spoke to said this but gixxa is the only one of the top of my head i can think of to email, mine is what he calls a 9cc decomp plate and ill be using a standard head gasket

28th September 2009, 19:32

ok cheers ill look him up

29th September 2009, 21:06

more questions! after i fit my decomp plate will i still be able to drive it as it will be 3 weeks before i get my standalone so it wont be maped till then. i was thinking i could rin it in for that 3 weeks but thinking about i think it my run very bad

30th September 2009, 17:30

you still runing the mf2? if so youll be able to drive it but if youve removed that and the turbo kit is on with the decomp too id imagine that it wont be very driveable nor do i think it would be a good idea to drive it

2nd October 2009, 11:22

no ths mf2 is gone. i was thinkin the same. but i need to see if it works.. i want to drive it to make sure the head dont leak as i will be booking it in for a new ecu on the 27th....

2nd October 2009, 14:34

that the prob im gunna have, gunna be strippping engine down and rebuilding with new parts and decomp etc, gunna need to know it all runs sweet and doesnt over heat and so on and so forth before i get the ecu fitted.... gunna be a 'mare tbf

2nd October 2009, 14:39

ok well i have everything and more to do mine. i will fit it and let you no how it goes. im doin it 2nite and all sat. if the car dont run at all will that cause a problem when i get my new ecu? as they would take a base map of my ecu and tune it. without the base map workin ill be in trouble...

2nd October 2009, 14:42

base map is what you need mate, will be writable before its fitted, then you fit and sort the lil niggles like overheating if any then get it fine tuned , gonna try get andy to do this for the pred when its finaly ready

2nd October 2009, 14:47

yea i really wanted the pred but i just cant wait.. im getin a emerald cant remember what model tho. but they will fit and map it so the problem is theirs. ha.

2nd October 2009, 17:07

if the car wont run or overheats or has a leak its yours as youll have to bring it back lmao, may even have to pay for another time slot

2nd October 2009, 17:34

lol aah man gixxer just mesaged me back and his set up goes block gasget decomp plate hylomars head

i just asked if his car ran ok b4 he had it remaped

2nd October 2009, 17:40

told you mate, lol

2nd October 2009, 17:43

actually had the reason why most do it that way when i strated writing the last post but its totally gone again lmao my memeory is really bad these days

2nd October 2009, 22:24

haha okay okay. when ever i say to people how im going to do it i just get this look lol. but my heads off now. pistons look mint like new could se myself in them. but the circle around ont or my spark plugs was a different colour. not good

2nd October 2009, 22:30

combustoin chamber should be coked up m8 that s normal, good crack if you pistons are that clean as the should be a lil coked up to. make sure you use pleny hylomars when sealing but not too much, should have a nice line going all round, but not too thick a you dont want it spreading evrywhere when you torque the head down

2nd October 2009, 23:05

yep will do. ill try go roung all the water chambers n tht with one thick line un the middle. hope this goes well. ill take a fre pics wilst the head is off sp ppl can see my water feed and oil feed/drain.

3rd October 2009, 02:39

Quote:

Originally Posted by willtr

how much are they? and do you need to get the head re-skimmed?

make sure your block is ok is the important thing!.. who cares if your heads flat if your blocks fucked... decmp plates aint worth it imo, i was going to get one, a MLS headgasket is alot better

3rd October 2009, 10:02

yep, my mate will check that today. we took the had of last nite lol was getin dark and the garden light kept going off. annoying.

4th October 2009, 21:26

Quote:

Originally Posted by starletcal

make sure your block is ok is the important thing!.. who cares if your heads flat if your blocks fucked... decmp plates aint worth it imo, i was going to get one, a MLS headgasket is alot better

where abouts can you get the MLS headgasket?