can get a set uf Jun 3s for my h22 pretty cheap from a friend but still on stock block and stock compression. Will it be overkill?

thanks- still learning the H motor

 

You have to upgrade the whole valvetrain for anything bigger than stage 1. Stage 3 would be overkill IMO, unless you're running a true red-top H22A.

 

yes would be horrible for your motor they sound much better going into mine....... h22's are prone to bending valves, id get all new valve train and clips so you dont end up like my first motor droping a valve.

P.S and if you dont feel like doing that i will be glad to take them off his hands

 

The short answer is you need more compression to make use of these cams.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by md23vtec &raquo;</TD></TR><TR><TD CLASS="quote">The short answer is you need more compression to make use of these cams.</TD></TR></TABLE>

thats what i figured, just wanted to check.

Thanks to everyone else- and i figured that i would need the valvetrain anyways so i didnt bother with asking- im not that bad - haha

 

you might want more compression, but they are going to make more power than almost any other cam you could put in there, even with stock compression. and you should be smart enough to upgrade your valve train anyway. if you are looking to buy a cam, there is no doubt you should pick them up

 

I was thinking the same thing.

It would make better sense to me to buy a jun3 cam setup, upgrade the valvetrain, and call it a day. That is until you can up the compression. Even though they'd work BETTER with a higher compression, having jun3's with stock compression (JDM's case 10.6:1) is better then nothing.

but would it yield more power then say a s2 stage2 with stock compression? Cam questions I never found an answer to...

 

Get it and sell it to me.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bluedlude &raquo;</TD></TR><TR><TD CLASS="quote">you might want more compression, but they are going to make more power than almost any other cam you could put in there, even with stock compression. and you should be smart enough to upgrade your valve train anyway. if you are looking to buy a cam, there is no doubt you should pick them up </TD></TR></TABLE>



<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TylerC161 &raquo;</TD></TR><TR><TD CLASS="quote">I was thinking the same thing.

It would make better sense to me to buy a jun3 cam setup, upgrade the valvetrain, and call it a day. That is until you can up the compression. Even though they'd work BETTER with a higher compression, having jun3's with stock compression (JDM's case 10.6:1) is better then nothing.

but would it yield more power then say a s2 stage2 with stock compression? Cam questions I never found an answer to...</TD></TR></TABLE>

 

what, theyd have a higher peak than most other cams, hed lose out alot of mid, but gain top end. thats good if you want #'s

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by md23vtec &raquo;</TD></TR><TR><TD CLASS="quote">



</TD></TR></TABLE>

they made 217whp with a kamikaze ebay header on a stock h22. jdogg will show you the dyno if you like.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mgags7 &raquo;</TD></TR><TR><TD CLASS="quote">

they made 217whp with a kamikaze ebay header on a stock h22. jdogg will show you the dyno if you like.</TD></TR></TABLE>

To me dyno #'s really don't mean to much when it comes to claims. I can dyno on one dyno and make 600 on another make 758 and make 585 on another. And still have the same results on the track.

Lets say a H22 makes 170whp is on normal stock H22 block with bolt ons ( not even high dollar stuff *kamikazee header* ) and then makes 217 with the addition of cams and a tune . All I can say is wow.

I'll stop posting my usless babble on topics that don't involve me. Sorry guys please continue ignore my post above

 

the JUN prelude only had 11:1 compression and claimed some ridiculous numbers. so 10.6:1 isnt that far off if the cams were designed for a motor with 11:1. throw some flat faced valves on the head and a thinner head gasket and you would be damn close if not at 11:1.

 

I just want to know what the heck you guys are talking about...???

Jun Stage 3's??? What??
No...
No...
No...

I'm sorry, but they don't exist...

I wish people would learn and stop asking about them..

After we figure this out, then you can discuss what will work better with what compression, because obviously you don't know the Specs of the Jun Cams to know what Compression Ratio to run anyways.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by md23vtec &raquo;</TD></TR><TR><TD CLASS="quote">

To me dyno #'s really don't mean to much when it comes to claims. I can dyno on one dyno and make 600 on another make 758 and make 585 on another. And still have the same results on the track.

Lets say a H22 makes 170whp is on normal stock H22 block with bolt ons ( not even high dollar stuff *kamikazee header* ) and then makes 217 with the addition of cams and a tune . All I can say is wow.

I'll stop posting my usless babble on topics that don't involve me. Sorry guys please continue ignore my post above </TD></TR></TABLE>

come on now roger, i know you could atleast agree that the JUN cams on a stock bottom would atleast perform decently.

i agree with you on dyno numbers.

 

Okay okay, well Jun3's = jun. Right? I thought I remember someone saying jun only made one set. Its S2 and such that make different stages.

If the jun guys only used a 11:1 ratio then the jdm definitely isint THAT bad.

But i'd throw on 11.5:1 CP's anyways

 

[QUOTE=bluedlude]the JUN prelude only had 11:1 compression and claimed some ridiculous numbers.QUOTE]

Not true! The jun prelude had 12.25:1 compression not 11:1.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MLBZ521 &raquo;</TD></TR><TR><TD CLASS="quote">I just want to know what the heck you guys are talking about...???

Jun Stage 3's??? What??
No...
No...
No...

I'm sorry, but they don't exist...

</TD></TR></TABLE>

You are correct today. Jun only makes one cam for the prelude; currently it's jun I, but it was jun III when it first came out. Apparently, someone at jun decided to call it a stage I since it is the only one available for the prelude.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MLBZ521 &raquo;</TD></TR><TR><TD CLASS="quote">I just want to know what the heck you guys are talking about...???

Jun Stage 3's??? What??
No...
No...
No...

I'm sorry, but they don't exist...

I wish people would learn and stop asking about them..

After we figure this out, then you can discuss what will work better with what compression, because obviously you don't know the Specs of the Jun Cams to know what Compression Ratio to run anyways.</TD></TR></TABLE>


theres really only a couple noobs that DONT know jun has one profile. so i dont see a need to chime in and correct someone based on that alone. the first time they search, they'll figure that out.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by thedread &raquo;</TD></TR><TR><TD CLASS="quote">

Not true! The jun prelude had 12.25:1 compression not 11:1.</TD></TR></TABLE>

i guess i stand corrected. bottom line is that they make power.

 

Well.....awesome results with my JUNs! Stock JDM block with 2 layer headgasket and flat valves.
Power drops off over 8000.
They didn't cause a mid range loss at all with my setup. I went from S2S1's to JUNs and made more power everywhere and even had a ridiculous 15whp+ gain from 4-4500. powerband support thanks to my BTP3 manifold.
My setup makes 25whp+ more than stock cammed H22's on my local Dyno with my JUN cams and Vibrant header tuned on Hondata......and please don't compare my numbers to what someone else did 2000miles away on a different dyno. I don't want to hear about your friends Prelude that made 190whp with just a DC header and ebay intake. It wouldn't make that much on my local dyno.

why would the JUN Prelude be 12.25:1 when the pistons that Cosworth made are 11.75:1


As I close............BUY THE JUNS!!!!!!!!!!!!!!!!!
And YES I shift my stock JDM motor at 8300-8500 on a REAL TACH!!!

The JUN owners thread I started......my dyno sheet is in there!
https://honda-tech.com/zerothread?id=1913025


Modified by :=:NirVTEC:=: at 1:05 PM 8/16/2007

 

Thanks to everyone for the insight... appreciate it.....

Any SORRY i didnt know JUN changed the name of the cams from JUN 3s, when every post that i read said JUN 3s . ... I apologize for not knowing the chronological history of the H series JUN Cam-

 

Well don't forget all the other Goodies the JUN Lude has too, so 270 whp, N/A, isn't hard to believe when the money is spent in the right places. But going back for a sec, dyno numbers mean nothing if you can't use them to your benifit in action.
Track numbers mean more to me than dyno numbers, because like someone said, different dynos vary in numbers, sometimes as much as around 200 hp, and that's more power than most cars make, stock.

And for anyone who cares to research what works best with JUN cams, click here:
https://honda-tech.com/zerothread?id=1913025&page=1

 

Actually I think the JUN Prelude was more like 230whp. That was 11.75:1cr 87.25mm bore/90.7mm stroke. EuroR manifold. JUN head package, JUN header.
And I think it was all controlled with a JUN ECU.