Has anyone tried Camtech's 1JZ cams yet? Cam/spring choice thoughts?

[ATMO_BT1]

Hello, after losing 4 SR20s this year in every which way you can possibly kill an engine I've begun putting together a 1JZ for my 180SX for 2013 and I have a question regarding cam choice.

I've got an internally standard non vvti 1JZ and my setup is a GTX3582 .82 on one of Kyle's manifolds with a 50mm gate and Haltech PS2000. I am wanting to use some kind of 264deg camshaft with it however have not been blown away by the quality of BC in the past and am interested in trying out Camtech's new offering. First of all, do you think this cam size is a good match for the rest of the setup? It's an E85 car currently and I plan on keeping it so if that makes any difference. I am going to run around ~25psi and the car is used track-only as a drifter, so transient response and mid range are more important than all out standing-start response or top end.

Second (and more importantly) has anyone seen or used Camtech's J cams yet? If so what were your impressions?

They have 9.5mm of lift versus BC's 8.44mm so I'm guessing they are somewhat more aggressive (similar to Titan's grind with 9.35mm) with and will certainly be calling for valve springs. I'm OK with this and would like to know which brand valve springs you recommend?

If anyone has used Titan's 264s their experiences would probably be applicable also, as the specs are very similar to Camtech from what I can see

Any thoughts appreciated

Link to camtech 1J cams:
http://www.camtechcams.com.au/toy_6cyl_1jz.html

Cheers
Jack

[1JZ-Rolla]

Hey Jack

Sucks to hear another SR20 let go...... but you won't look back from the 1JZ of course (apart from its comparative weight!).

I don't have directly relevant data on the suitability of the Camtech cams vs the general tried & true HKS etc sorry, but on the topic of springs, don't they have their own spring/retainer kit to suit?


Cheers
Phil

[midnight_purple_GA70]

maybe as another option flick the guys from kelford cams an email to see if they can do something for the 1jz

the guys using them on 2jzs seem to like them...

[ATMO_BT1]

maybe as another option flick the guys from kelford cams an email to see if they can do something for the 1jz

the guys using them on 2jzs seem to like them...

Good point, I actually think you might be able to use 2J cams in a 1J if you use the matching springs & retainers? Have you heard that? I had a look and Kelfords 2J 264s actually have 9.65mm but more interestingly run a 272 on the hot side, I don't have any experience with staggered cam sizes so I'm not sure how far north the 272 exhaust cam would push the powerband.

Hey Jack

Sucks to hear another SR20 let go...... but you won't look back from the 1JZ of course (apart from its comparative weight!).

I don't have directly relevant data on the suitability of the Camtech cams vs the general tried & true HKS etc sorry, but on the topic of springs, don't they have their own spring/retainer kit to suit?


Cheers
Phil

Cheers Phil I've pretty much got the car back up and running with an SR again now (they may suck but at least they're easy to fix), I am just sick of burning money on motors so I thought the 1J would be a good plan for 2013. HKS cams would be ideal however from memory they weighed in at well over $1100 for the cams alone, do you know if that's still the case?

Camtech do list a product code for a set of springs to suit their 264s, I just thought I'd ask what springs you guys all use because being new to the whole 1J thing I wasn't sure if there was a set of holy-grail springs that everyone goes for.

How hard did you end up leaning on your J in the panel van? I've been off the map for a few years, sorry to hear you pulled it down. I actually went with this setup after spending so much time behind the wheel of Jason's old RA28 and really enjoying it, and I'm pretty sure he only did what he did because of your car... so there's some kind of indirect connection in there somewhere! Of course between now and then E85 has taken over, so I'm hoping that and the cams wake the J up that bit more

Is there anything else you recommend reliability wise? I saw a shot of your engine bay with an aftermarket harmo balancer, is that something you'd recommend?

[1JZ-Rolla]

I never ended up opening that motor in the panelvan, cams and bottom end were stock. The Ross balancer was for peace of mind more than anything, as the OEM ones are notorious for separating at the rubber damper eventually. Needed the Ross item for ANDRA scrutineering also, as they don't allow cast items for 10.99 and quicker.

I switched to E85 naturally, not for more power (injectors and pump were my limit) but for its cooling effect and det resistance with the Wakefield sessions that I was doing. On a very conservative road tune, it made 328wkw @ 20psi through the auto (with GT3582r 0.82 A/R turbo).

Cams and a further fuel system upgrade would have been the logical next step, though the power was already more than enough for that driveline/chassis.

If I had the chance to do it again, i'd probably stick with a 3076 sized turbo with suitable cams. The 3582 was a little lazy to respond in my opinion, though it all depends on your driving style and the type of events you do hey.

With the Aussie dollar still being pretty strong, shop around a bit for the HKS cams if you want to stick with a tried and proven setup, the sellers in the US often have decent deals even with freight.

What gearbox are you planning to use?

Cheers
Phil

[YGO 08]

there is a few qld boys with 1j cressidas that have them (272's) and they seem to be good. they have used (performance springs) appaiently thats the brand of the springs and have worked well. i got a price for my 2j with camtech 272's and they wanted 770 which was pretty reasonable i think.

[ATMO_BT1]

Hey Phil sorry for the laggy reply, I've been super busy!

I've got a remote shift R154 already and am thinking of using a OS Giken TR2CD as I have the TS2CD in my SR20 setup and have been very happy with it. I have both push and pull clutch bell housings here, I was thinking of going with the push setup just for sake of simplicity, do you have any thoughts on this?

I looked into the balancer situation a little more after what you said and have decided to order an ATI item, the Ross looks to be the best but is so expensive!

328kW is very impressive especially through the auto, bet you miss that!

there is a few qld boys with 1j cressidas that have them (272's) and they seem to be good. they have used (performance springs) appaiently thats the brand of the springs and have worked well. i got a price for my 2j with camtech 272's and they wanted 770 which was pretty reasonable i think.

Cheers mate that's great to hear!

I'm going to be using the Camtech 264s along with their recommended spring package, I'll update this thread for the purpose of future searchers and let them know how they perform

[1JZ-Rolla]

Yep, I miss it like crazy.... stock motor in the A70 feels very sedate by comparison.

All of the multi-plate clutches i've seen for the JZ use a push converter, either with a traditional clutch fork, or the integral slave cylinder that sits over the input shaft.

Remote shift R154 has nicer synchros than the earlier direct linkage boxes, so good pick there.


Cheers
Phil

[AE112R]

I'm sorry dont meant to hijack your thread. Was interested in 1JZ cams lately. Have anyone here tried those KKR JZ cams? Their specs seems alright just don't know how realiable they are... Thoughts anyone?

[midnight_purple_GA70]

Good point, I actually think you might be able to use 2J cams in a 1J if you use the matching springs & retainers? Have you heard that? I had a look and Kelfords 2J 264s actually have 9.65mm but more interestingly run a 272 on the hot side, I don't have any experience with staggered cam sizes so I'm not sure how far north the 272 exhaust cam would push the powerband.

fitting 2j cams in a 1j requires some machine work...

good news now though is Kelford do cams for the 1jz so if you are interested i can get a set for you

Here is a listing of cams for the 1jz for you to browse


Recently a WA workshop fit a set of the 2jz 264/272 cams to a supra with t04z...
it was making 430 @ 18psi prior to cams
after cams made 490 @ 18psi
final tune made 519 @ 20psi

I dont actually have dyno graphs of it all etc just word of mouth but it was good enough for the mechanic who installed them to want to order his own set...