changing cam?

[brainlessfool]

Has anyone had any luck with changing the cam on a 22R with out changing the head gasket? or done it with out having head gasket problems after? I'm being told here that it best/ necessary to change the head gasket when you do a cam change any imput is very helpful :thumb:don't want to be going down the road after and hear a bad noise :yipes: thanks....the fool

[79coyotefrg]

:thud:well, i usually take the head off ,but if you have a good seal ,i dont see why you couldnt .   what cam are you going to use??   i'm running  LC's stage 2, :~~: .460 lift 290 advertised, 240 @ .050.   had to use double valve springs  to keep those things attached to the cam

[mr4x42u]

I would think it would be best to change the head gasget just due to the fact all the head bolts come out but its one of those things you won't know till ya try it..But on the other hand is it worth the trouble of finding out it won't work,,or finding out its leaking a few weeks down the road..I would just change the gasget for the reliabilty factor...

[79coyotefrg]

yea brainless,  i think mr4x4 is right,  best to put another gasket on now than have to pull it off in a week or so

[brainlessfool]

well thats what I was being told here, just wanted to check:thumb: thanks.......the fool

[hawaii500_1999]

i've scratched my head looking at it and asked around but there's just no way i have found on how to do it.

the cam must be pulled stright up to remove it and the rocker assembley has to come out to do that.

removing the torque on the head gasket and bolting it back together without changing the gasket i think is a krap shoot.  

i myself have never seen it work, but i have been stuck up by lake pilsbery with a blown head gasket on my buddies truck.  that sucked.  but never the less, some folks have claimed that it works.

me?  i would never do it.  i go out to BFE and i need my truck to be reliable.  

[brainlessfool]

I go out to BFE too and I pulled the head today after work! Now the folks at L.C. eng. told me I have duel timing chain on my motor now, and so I orderd a duel chain replacement from them and when I got the head off:ack: single chain! after I had asked for the duel chain conversion kit too. THIS SUCKS!! so have  any of you had promblems with L.C.? or is it just my good luck? or maybr I dont have a 83? motor?? I see its a 22R on the block, butt how can I tell for sure the year?? HELP!!!! thanks......the fool

[79coyotefrg]

:dunno:hmm,  i've never had a problem with LC  but i guess anybody can make a mistake
the 80-84 22 had a 11.280 deck height,  the 85+ had 11.090

[79coyotefrg]

also, the 85+ block had a flat place on the exhaust side of the block just above the oil pan  and below the  freeze plugs  earlier blocks didnt have this


also i think ,  not for sure, but i think the 82 to 84 blocks needed a 20R head to be  using the double chain,  i think

[BigMike]

I say change the cam and get on with your life.

BigMike

[brainlessfool]

come on mike, you been trigger fondling again?? got the cam out, got the head down to the head shop.(no big mike, its a place that does valve jobs)and just got though cleaning up the short block. so now,the clys do not look good. look like the motor was left out in the rain for a few days then honed out. seen worse butt this is my motor. looked at efi head and I can't put one of those on my motor with the pistons that are in there now, they stick out of the block abit. so I gess I'll be looking for flat tops that will go in my 83? 22R and then think about a efi head. I think that will make my comp. ratio about (this is my math)11.4-1 Imput? that sounds perty good to me! so its clean up till monday and then I'll master the possiblites:thumb: if anyone has any imput on my 22R for towing (ie) pistons and where to get'um I'm all ears. got a cam(in.dur.214,ex dur.224@050 lift in.416 ex.430) still got the stock intake:sob: and the header doing good ,dist recurved. and a weber 33/36. so imput on pistons plz. and anything elas that you think would be good while I've got it down:thumb: thanks.........the fool

[79coyotefrg]

dude :smack:11.4 to 1,  hope you have access to methanol.   my 20R, bored to 89.25mm+crank reground to 90mm stroke+ slight piston dome (KBsilvolites), 4mm above deck+.460 cam with 240 duration at .050+double valve springsand 1mm oversize valves with 3angle grind+32/36weber
my comp ratio came out to be 9.3 to 1 and i have to use premium gas 91+octane

i emailed you a comp ratio calculator i used

[brainlessfool]

have not tried the cal. yeat,looks cool. butt at 9.3-1 you should not have to use 91 oct. gas. unless you need to back off you ing. timming a tad. my BIG truck runnes 10.5-1 and run reg gas when not towing. I do keep the timming at the lesser end of the scale to run reg. gas, butt its runnes it just fine......the fool

[brainlessfool]

on sec. thought maybe its the good calif. gas we got out here!!:hahaha:

[79coyotefrg]

yeah  i think  cali gas is oxygenated out the wazzoo


but i got to thinking about the ign timing today, i had backed it off quite a bit,   finally put a light on it today,   it was 10 degreesbtdc, book say 8 without any advance
 :smack:i'll have to pull the dist and move  one tooth on the gear to get it right,  
so  plug your measurments into that calculater and tell me what ya got

[brainlessfool]

well at the moment I got a pulze, thinking of useing a 20R head on my 83, 22R motor. but read you MUST cut like .080 off the "aline the cam to the crank" never heard of that before. or maybe I'll just have my 22R head gone though. will call L.C. tomarow and see what they say. would like to run the 20r head. butt dont what a big head ack!(no pun intented) any imput on what it takes to put a 20R on a 22R block? smog promblems? anyone? I'm all ears! thanks.....the fool

[hawaii500_1999]

i just got through getting a 22r with 20r head on it smogged for my wifes truck.  i had to get a carb adapter to mount the 22r carb on the 20r intake and i had to monkey around with the 20r intake and 22r thermal switches and vacum valves.  

it is a torquey motor but doesn't run high rpms.  have to run the mid grade gas or it pings.  has a 260 cam in it.  you have to remember that the ports on the 20r head are smaller than 22r heads.  the flow is not as high for a big breather motor, but you can have it ported to get it to flow more.

personaly if i was to do it again i would buy the bigger pistons and run the 22r head.  

the 20r head took a bit of work but was cheaper.(i think)

you've got a ton of options bud.  if your 22r head is good and out getting a vlave job then i'd say to work with what you've got.  buy some bigger pistons for more compresion for more torque.  

also most cam grinders will have a compresion range for the cams to be ran with.  i always use my cam to dictate the compresion that i will run and the head porting as well.

sorry so long i just kind of ramble sometimes.

[brainlessfool]

well talked to L.C. today, they got me str8 on the chain set up. can use what they sent with no promblem. ordered there 9.7/1 forged pistons too(when my wife see the bill you may not here from me again, I maybe feeding the fishes) and I got my head guy(that does not sound right) working on bigger vavles too. whet with there 94mm big bore pistons. hope it works. so now I'm looking for a intake , offy duel plane? or single? any others? that any one likes? looking for mid range,for pulling my trailer on the road. some thing that is good for say 1500 to 5000 rpm or so all imput is appreciatiad:thumb: thanks......the fool

[84runner]

Well I'm piping in on this a little late, But u can change the cam without doing a head gasket. I have done it 3 times myself, once on my bros yota truck then his runner and then my runner.  I was shown how by a friend who is a tech at a toyota dealer.  He has done it numerous times. The key things are to make sure the motor is cold, release all pressure in the cooling system and remove the timming sprocket, befor loosening the head. Then just be careful and try not to shift the head.

[brainlessfool]

good bit of info! I'll try it next time:thumb:

[brainlessfool]

So my ? now is, how do you find the displacement of a metic motor??? tried with the figs on a 350, no promblem. tried with the figs for my 22R, and??? no go:sob: so I know its Bore-times-pie-times-stroke= volume . butt dont seem to work with CCs. so if my motor is 94 bore by 89 stroke, whats the displacment for one cly? (sorry glen cant seem to make the scale work for me on this)  if some one can tell me what I'm goofing up on I'd be very happy! thanks......the fool

[WHITE_TRASH]

Thats an easy one just multiply liters by 61.4 that will give you cubic inches it also works in reverse of course.
a 2.4 liter 22r measures out at 147.36842 if that helps to get you started

[79coyotefrg]

hmm, well most of my calipers are metric,  but anyway,   http://car.race-cars.net/calculators/displacement_calculator.html

[brainlessfool]

Thanks glen, that one worked just fine for me! must have been having a bad day with the other one:dunno:

[79coyotefrg]

:up:glad i could help

[mr4x42u]

brainless  I would go duel plane intake if you can find one for sure..i have been running them for years and love them..They  offer great power in all rpm's..I have never had a problem with LC..Them and doa have always been great,,,Have you got pistons yet?I thought I herd thay now had the hyperutetic (spelling) pistons for the 22r now?

[brainlessfool]

do LC and DOA sale the duel plane pffy??? and yes LC showed me that I was wrong, not them yup I got my pistons, from LC, the big bore kit. 94mm pop ups. they say there 9.7-1 butt I figer there more like 10.0-1 in my app. just finished "porting" the head and sent it back to the head shop. went with 1mm over sized valves in the ex. left intakes alone. would love a offy intake, or maybe injetted?

[brainlessfool]

intake, for a 22R? with a 32/36webber?anyone?ideas?efi?:sob:

[mr4x42u]

yea,,,offy if you can find one..I know there out there..have seen them before... :chug:

[hawaii500_1999]

i've got an offy with a weber 33b.  i like'em.  runs real smooth.

i think summit racing sells them.  i got mine from

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