size decomp plate?

1. littleblue1 Frequent Poster Joined: Sep 2010 High wycombe Posts: 698 2000 mk2 vtr

   #1 14th June 2012, 10:40

   installed gt17 turbo kit with the bandaide mf2 and 5th injector until i have enough money for bigger injectors and a remap. this is fitted to my saxo vtr 8valve. i think compression ratio is 10:1 not 100% sure on that. i need a decompression plate but unsure of what thickness i will need? and the decompression plate will run by its self not in between two head gaskets due to most people saying that cheap crappy way of doing things! how much are we talking about for a decomp plate and were from. i am unsure what what thickness to get? i will be running on standard internals and with the decomp plate be running 8-10 psi? if u need any other info let know cheers
   
   cheers people
2. Gareth_R Established Member Joined: Mar 2010 Basildon, Essex Posts: 1042 Citroen AX VTS

   #2 14th June 2012, 11:03

   Ring ferriday engineering - they will talk you through what size you want for what ratio, they can do the math for you, and will also discuss options for headgaskets etc.
   
   You can use a decomp with no headgasket, but it is dependant on what material the decomp is made from
3. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

   #3 14th June 2012, 12:21

   My 2mm is still for sale
4. littleblue1 Frequent Poster Joined: Sep 2010 High wycombe Posts: 698 2000 mk2 vtr

   #4 14th June 2012, 22:34

   Yea I think I may give them a ring and see what they say! And blackie are you jus running the decomp plate alone with no head gaskets?
5. littleblue1 Frequent Poster Joined: Sep 2010 High wycombe Posts: 698 2000 mk2 vtr

   #5 14th June 2012, 22:35

   If so how much u want?
6. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

   #6 15th June 2012, 08:51

   I ran it with a gasket, id like £55 delivered, it cost me £130.50
7. littleblue1 Frequent Poster Joined: Sep 2010 High wycombe Posts: 698 2000 mk2 vtr

   #7 15th June 2012, 10:57

   You say you ran it with a gasket! What either side of the decomp plate? Condition ?
8. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

   #8 15th June 2012, 11:47

   No just between the decomp and the block, between the head I used Curil high sealant
   
   It's used condition
9. littleblue1 Frequent Poster Joined: Sep 2010 High wycombe Posts: 698 2000 mk2 vtr

   #9 15th June 2012, 20:03

   i think used states the obvious lool! and whats the decomp made of?
10. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

    #10 15th June 2012, 20:48

    Aluminium,
    
    Yeah lol, no other way of describing it really, it is what it is mate, done 5k in my car
11. user_21226 Saxperience Post Whore Joined: Feb 2008 wirral Posts: 6348 Icelandic vtr turbo

    #11 15th June 2012, 22:19

    I've got a new ferriday one and unopened sealant forsale if andys used one doesn't take your fancy
12. littleblue1 Frequent Poster Joined: Sep 2010 High wycombe Posts: 698 2000 mk2 vtr

    #12 16th June 2012, 13:44

    How much wat what thickness? And made of?
13. user_21226 Saxperience Post Whore Joined: Feb 2008 wirral Posts: 6348 Icelandic vtr turbo

    #13 16th June 2012, 13:47

    100 posted mate its 2mm made of the same stuffs andys is, ferriday only use alloy as far as I'm aware which is good as it keeps the same material together when bonding it to the head
14. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

    #14 16th June 2012, 14:07

    Ferriday will do copper etc as well
    
    But they will be very expensive lol
15. littleblue1 Frequent Poster Joined: Sep 2010 High wycombe Posts: 698 2000 mk2 vtr

    #15 18th June 2012, 15:37

    Head gasket down 1st then the sealent then the decomp plate right? And why is urs 45 quid more than blackies decomp plate?
16. littleblue1 Frequent Poster Joined: Sep 2010 High wycombe Posts: 698 2000 mk2 vtr

    #16 18th June 2012, 15:38

    Don't answer that lool! Urs is brand new with sealant haha! Sorry my bad!
17. littleblue1 Frequent Poster Joined: Sep 2010 High wycombe Posts: 698 2000 mk2 vtr

    #17 18th June 2012, 15:42

    Use the sealant between gasket n decomp plate? On the area's where the oil n water ports aren't yea? Do u have to use sealant on top of decomp plate too?
18. Gareth_R Established Member Joined: Mar 2010 Basildon, Essex Posts: 1042 Citroen AX VTS

    #18 18th June 2012, 15:49

    No it's block, gasket, plate, sealant all over in a thin layer, head
    
    That's if the plate is made from aluminium alloy like mine and prob blackie's as well
19. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

    #19 18th June 2012, 16:37

    Yeah the paste is to bond the decomp to the head, the gasket will seal itself against the other side of the decomp
20. littleblue1 Frequent Poster Joined: Sep 2010 High wycombe Posts: 698 2000 mk2 vtr

    #20 18th June 2012, 16:44

    Okay cheers guys and 1 last thing if I was to buy ur decomp plate blackie they will be fine to reuse again won't they? Do u have the right sealant for it? If so ill buy both decomp plate plus sealant if u have any enit! And I take it I jus get another head gasket as normal for my car to run along with decomp plate yea? Did u say 55 quid delivered blackie?
21. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

    #21 18th June 2012, 16:46

    Needs a bit of a clean but don't see why it couldn't be used again
    
    The paste that I had (Ferriday supplies) is called Curil, I ran out but ebay etc sell, there's a few diff kinds of sealant you can use
    
    And yeah £55 delivered, I paid £130 lol
22. littleblue1 Frequent Poster Joined: Sep 2010 High wycombe Posts: 698 2000 mk2 vtr

    #22 18th June 2012, 17:05

    If I'm going to buy it I need to know for definate if the decomp plate is good to be reused haha! And clean up? Fair enough ill sort out the money tonight enit! Need it by friday at the latest going on holiday and mates doing it for me enit
23. Gareth_R Established Member Joined: Mar 2010 Basildon, Essex Posts: 1042 Citroen AX VTS

    #23 18th June 2012, 17:23

    yes they can be reused, will need to scrape off bits of headgasket and sealant i expect, nothing major
24. littleblue1 Frequent Poster Joined: Sep 2010 High wycombe Posts: 698 2000 mk2 vtr

    #24 18th June 2012, 17:30

    http://item.mobileweb.ebay.co.uk/vie...id=89320723735 is this the stuff I need?
25. user_15989 Saxperience Forum Bum Joined: May 2007 Posts: 4857

    #25 18th June 2012, 18:41

    Quote:

    Originally Posted by littleblue1 installed gt17 turbo kit with the bandaide mf2 and 5th injector until i have enough money for bigger injectors and a remap. this is fitted to my saxo vtr 8valve. i think compression ratio is 10:1 not 100% sure on that. i need a decompression plate but unsure of what thickness i will need? and the decompression plate will run by its self not in between two head gaskets due to most people saying that cheap crappy way of doing things! how much are we talking about for a decomp plate and were from. i am unsure what what thickness to get? i will be running on standard internals and with the decomp plate be running 8-10 psi? if u need any other info let know cheers cheers people

    I don't know who is telling you these things but a decomp plate is as much a botch as stacking gaskets. Some people would argue stacking gaskets is a better way to go. All i will say is back in the good old days of the pioneering saxo turbo tuners twin gaskets was a common way to lower compensation even on engines far wilder then yours. The old DP cars where insainly quick and ran twin gaskets for many many years.
26. littleblue1 Frequent Poster Joined: Sep 2010 High wycombe Posts: 698 2000 mk2 vtr

    #26 19th June 2012, 16:12

    so what ur saying is just go and buy two head gaskets from allparts or somewhere like that? if i did that would i still need sealant tho?
27. user_21226 Saxperience Post Whore Joined: Feb 2008 wirral Posts: 6348 Icelandic vtr turbo

    #27 20th June 2012, 21:39

    As long as the gaskets are multi layer steel ones yes
28. littleblue1 Frequent Poster Joined: Sep 2010 High wycombe Posts: 698 2000 mk2 vtr

    #28 21st June 2012, 12:18

    in the end i brought the decomp plate off blackie. do i need to torque the head down differently ?
29. tweeqd Established Member Joined: Mar 2006 Farnham Surrey Posts: 1542 AX GT 16v turbo 6 speed with NOS 205 gti6 E 320

    #29 21st June 2012, 21:58

    no standard torque settings
    
    the copper ones are very rare, mine was the 1st ferriday one ever made for the TU engine and its copper, they dont do them now in copper as the material cost has gone through the roof but the copper ones can be used instead of a gasket
30. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

    #30 21st June 2012, 22:09

    coppers ones can only be used once though cant they? as they squash to the head?
31. tweeqd Established Member Joined: Mar 2006 Farnham Surrey Posts: 1542 AX GT 16v turbo 6 speed with NOS 205 gti6 E 320

    #31 21st June 2012, 22:11

    nope, used mine a few times
    
    not for a while mind although im tempted to use it now as a gasket instead of an MLS one
32. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

    #32 21st June 2012, 22:14

    interesting,
    
    saying that the TU head doesn torque down much anyway does it.
33. littleblue1 Frequent Poster Joined: Sep 2010 High wycombe Posts: 698 2000 mk2 vtr

    #33 25th June 2012, 10:33

    jus brought bosch 315cc injectors from a rs turbo hope these will fit my rail haha.