bajansuperman Posted December 21, 2016 Share Posted December 21, 2016 Any info on using a smaller head gasket to rise compression with low compression pistons, is it worth it and are there any good metal ones that wouldn't leak? Thanks Sent from my SGH-M919 using Tapatalk Quote Link to post Share on other sites
richardc9052 Posted December 21, 2016 Share Posted December 21, 2016 Imo just use a standard gasket. I'm going to assume your getting the car mapped and your not aiming for a high comp build, if that's the case you won't notice much difference off boost with lower comp as the mapped will add more timing down low to compensate the lower cylinder pressures. Obviously this only works to a certain extent but once your using a set of pistons that are readily available the lowest cr you'll have is 7.5:1. Obviously this is all guesstimation but in my opinion your fine with standard. Quote Link to post Share on other sites
AdamB Posted December 21, 2016 Share Posted December 21, 2016 What turbo and boost pressure? Quote Link to post Share on other sites
bajansuperman Posted December 23, 2016 Author Share Posted December 23, 2016 If I use a standard gasket compression would be around 140 150 which I'm trying to avoid with the head gasket, would like to be running 20psi of boost if possible and I currentlly have a t517z which is basically a tdo5 16g so the standard head gasket compression would not be ideal Sent from my SGH-M919 using Tapatalk Quote Link to post Share on other sites
epcashin Posted December 23, 2016 Share Posted December 23, 2016 buy a .5 steel on off Id workz and skim to head to death should be a good help Quote Link to post Share on other sites
AdamB Posted December 23, 2016 Share Posted December 23, 2016 Are you using OEM headbolts or ARP bolts / studs? You could use the Paseo one, think its 0.5mm but it's not a MLS gasket. Quote Link to post Share on other sites
5e colin Posted December 23, 2016 Share Posted December 23, 2016 (edited) paseo 0.5 is multi layer i recently fitted 1 to missstress https://www.parts2go.de/dichtung-zylinderkopf-multilayer-steel10088400-139 Edited December 23, 2016 by 5e colin Quote Link to post Share on other sites
AdamB Posted December 23, 2016 Share Posted December 23, 2016 paseo 0.5 is multi layer i recently fitted 1 to missstress https://www.parts2go.de/dichtung-zylinderkopf-multilayer-steel10088400-139 Quote Link to post Share on other sites
bajansuperman Posted December 23, 2016 Author Share Posted December 23, 2016 Are you using OEM headbolts or ARP bolts / studs? You could use the Paseo one, think its 0.5mm but it's not a MLS gasket. Quote Link to post Share on other sites
5e colin Posted December 23, 2016 Share Posted December 23, 2016 metal 1 adam not like oem stuff Quote Link to post Share on other sites
AdamB Posted December 23, 2016 Share Posted December 23, 2016 Yes Adam ARP headbolts was even told to use 20 valve ARP which are thickerSent from my SGH-M919 using Tapatalk Would you not have had to drill and re-tap the threads if their larger? Or do you mean you've got studs? Try the gasket Colin has mentioned, I would be claying the motor just to be sure of valve to piston clearances. Quote Link to post Share on other sites
bajansuperman Posted December 23, 2016 Author Share Posted December 23, 2016 Would you not have had to drill and re-tap the threads if their larger? Or do you mean you've got studs? Try the gasket Colin has mentioned, I would be claying the motor just to be sure of valve to piston clearances.Yes would require drill and retapAnd will be getting the gasket Sent from my SGH-M919 using Tapatalk Quote Link to post Share on other sites
gorganl2000 Posted December 24, 2016 Share Posted December 24, 2016 If I use a standard gasket compression would be around 140 150 which I'm trying to avoid with the head gasket, would like to be running 20psi of boost if possible and I currentlly have a t517z which is basically a tdo5 16g so the standard head gasket compression would not be idealSent from my SGH-M919 using Tapatalk based on your goals, i'd suggest you just use 4efte ARP headbolts....no need for any fancy and expensive drilling, retapping, etc stock bolts may even work...but ARP would be safer Quote Link to post Share on other sites
bajansuperman Posted January 3, 2017 Author Share Posted January 3, 2017 Is there a formula to fine out what compression I would get per cylinder with these pistons? Are would I have to do the usual test Sent from my SGH-M919 using Tapatalk Quote Link to post Share on other sites
AdamB Posted January 5, 2017 Share Posted January 5, 2017 Is there a formula to fine out what compression I would get per cylinder with these pistons? Are would I have to do the usual testSent from my SGH-M919 using Tapatalk CR = (Cylinder Volume + Combustion Chamber Volume) / Combustion Chamber Volume Quote Link to post Share on other sites
bajansuperman Posted January 6, 2017 Author Share Posted January 6, 2017 CR = (Cylinder Volume + Combustion Chamber Volume) / Combustion Chamber VolumeThanks Adamb Sent from my SGH-M919 using Tapatalk/>https://youtu.be/i9io_DknQ3USent from my SGH-M919 using Tapatalk Quote Link to post Share on other sites
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