Ryan, Not sure how much of a gain you'll get fitting the 44mm valves but if you have to replace the valves you might as well use the larger ones as they cost the same.The last head i did cost $8 each for the valves,$8 each for hardened seats fitted to suit the larger valves and $8 each guide fitted,$30 to face the head,$90 for the crow springs,$90 for the crow lash pads,$70 for the wade cam.They did the hardness test and pressure test for free and i cut and ground all the seats and valves and did all the porting and combustion chambers.Its also worthwhile blending the bores to the combustion chambers Andrew Smith
Ryan Ottens wrote: > hey andrew, > im thinking cam and lash pads are prolly gonna cost me arouond $300 > get the head matych ported say $100 and maybe 280zx valves. > im not looking at spending too much money but enough to get some decent > power. > will the 280z walves be worth it? > thanks again > ryan > > >From: andrew smith <[EMAIL PROTECTED]> > >Reply-To: [EMAIL PROTECTED] > >To: [EMAIL PROTECTED] > >Subject: Re: 1.8 VS 2.0 ltr head > >Date: Sat, 09 Mar 2002 16:13:07 +0800 > > > >Ryan, > >Sometimes it works out a lot cheaper to find a head thats already been > >done. > >If you want to get your head done you'll need to find someone experienced > >with > >the L series in your state.You could be looking at over a $1000 to get what > >you > >need.It adds up pretty quick with the cam,valve springs,valves,valve > >seats,valve > >guides and seals,lash pads,head porting and match porting the > >manifold,deshrouding and cc'ing the chambers,facing etc. > >A cheaper alternative might be to use the larger port L20 type head and > >face it > >to get some more comp and fit heavier springs,lash pads and your cam.A lot > >depends on your budget and how much power you want. > >Andrew Smith > > > >Ryan 510 Ottens wrote: > > > > > andrew, > > > i dont really plan on doing much of the work myself, as i dont really > >have > > > the time, equipment or knowledge. > > > im willing to pay someone to do it for me, but b4 i start getting > >anything > > > done i want to know exactly what should get done. > > > > > > so it seems to port out the 1.8 is the way to go then? > > > is polishing worth it? > > > anything else i can do? > > > > > > cheers, > > > ryan > > > > > > >From: andrew smith <[EMAIL PROTECTED]> > > > >Reply-To: [EMAIL PROTECTED] > > > >To: [EMAIL PROTECTED] > > > >Subject: Re: 1.8 VS 2.0 ltr head > > > >Date: Sat, 09 Mar 2002 07:11:51 +0800 > > > > > > > >Ryan, > > > >I assume you mean a closed chamber L18 head compared to the open > >chamber > > > >L20 > > > >head.Both heads can be modified to suit and probably depends on what > >you > > > >can > > > >do yourself and/or how much your willing to pay someone.Using a closed > > > >combustion chamber is the way to go which means the L20 head would need > >to > > > >be > > > >welded up and machined which can be costly.The L18 head would only need > >to > > > >have a bit of deshrouding in the chambers.The L20 head generally has > >larger > > > >ports than the L18 head to start with but both would require porting.If > > > >your > > > >attempting to do the porting yourself i would suggest trying to find > > > >something to copy.The last head i did i borrowed a corroded out head of > > > >someone that had come off a 200hp L20 and copied that.If you havent > >done > > > >any > > > >porting before, do some homework first.Ive seen plenty of people stuff > >up > > > >good heads.I would also get a hardness test done on the head before i > > > >started > > > >anything. > > > >Andrew Smith > > > > > > > >1600 BoY wrote: > > > > > > > > > hey list, > > > > > im stumped at which to choose between the 1.8 or the 2.0 ltr. > > > > > currently i got a L20, with twin 45s on the way. plans include big > >cam, > > > > > clutch, and match ported head. > > > > > now i have both a 1.8 and a 2.0 head spare. ive been told some > >different > > > > > stories but dont know which head will best suit the application. im > > > >under > > > > > the impression the 1.8 raises compression, but if u shave the 2.0 > >will > > > >it > > > > > also raise the c/r? > > > > > i also plan to get 280zx valves(44mm) but i dont know which head. > > > > > IE if i do the same mods to the 1.8 and 2.0 which will benefit > >better? > > > > > if the 2.0 is ported could u get it ported more than the 1.8, ie is > > > >there > > > > > restrictions on the 1.8? > > > > > > > > > > any other mods i should to to the head at all? > > > > > thanks list, > > > > > Ryan Ottens > > > > > > > > > > _________________________________________________________________ > > > > > Chat with friends online, try MSN Messenger: > >http://messenger.msn.com > > > > > > > > > > > > > > > _________________________________________________________________ > > > Send and receive Hotmail on your mobile device: http://mobile.msn.com > > > > > > > _________________________________________________________________ > Send and receive Hotmail on your mobile device: http://mobile.msn.com > --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[email protected]/ ---------------------------------------------------------------------
