throttlehappy46

Has anyone used the Kelford 302/292 11.5/11.0 'C' spec cams in their Maxima or know of anyone using them in a 350Z etc?

grey99max

iTrader: (12)

You might check on the "my350Z.com" forum - them boys spend a bunch on cams and such.

What's the story on your Pulsar??


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95BLKMAX

iTrader: (10)

holy crap! I didnt even know they made cams that agressive for the VQ! Now THOSE are serious specs! I'd love to see a before and after dyno if you so happen to find one in your research throttlehappy46

STILLENGLE

Are they S1 or S2 cams? that seems to be an aggressive cam. I wouldn't run anything bigger then in the 200's.

throttlehappy46

http://www.camshaftshop.co.nz/index...._view.tpl.html

I think I have explored the limits of the current 272 cams... All I want is another 10% power and then smack down some Honda K20/24 hybrid EG hatches!

Will let you know what info I come up with. I sent an email to Kelford a few days ago but not heard back yet, thought I would try some independant sources while I wait though

Edit: my350z appears to be down

throttlehappy46

Checked 350z forum, not much info on aggressive cams

Looks like I am going to be the 'C' spec guinea pig

Atleast I can then post dyno numbers going from stock VQ35 cams, to Tomei 272's to the Kelford C spec cams.

PS: grey99max, a Pulsar is essentially a RHD B13 Sentra and weighs in at 2500Lbs with me in it.

MIK3

iTrader: (12)

Looking VERY forward to this...

P.S.: You seem to own some very particular and rare vehicles. An R34 for a daily huh? Good stuff. Interesting that you decided to go for a VQ in the Pulsar instead of the GTI-R's SR20DET. Props man. Would love to see more pics/specs!

throttlehappy46

R34 is not 'really' a daily, just been the lucky recipient of daily duties recently due to my other car getting smashed at Easter time It does have some extensive modifications as well...

I have done a few DET swaps for friends/customers and they dont really excite me. I had a SR20 VE hybrid engine in a Pulsar for a while, considered building a VE+T at one point but a VQ35 was a much better choice. This is the fourth VQ swapped Pulsar I have done and they are by far the most fun! Nothing beats displacement!

throttlehappy46

C spec cams are on order.

Got a baseline from the Tomei Procams on a Mainline dyno, going to put the stock cams and my original modified tune back in tonight when I get home and have the dyno operator pick the car up to get a base line tune on the same dyno. Then do a C spec comparison

Will be doing both E85 and US spec 93 fuel runs on all three cams to see what gains E85can make as well

STILLENGLE

whats the Duration and lift of those cams?

Are they turbo/NA rated?

throttlehappy46

Tomei
In: 272 overall duration(232@1mm), 11.3 cam lift(11mm valve lift cold)
Ex: 272 overall duration(228@1mm), 11.0 cam lift(10.67 valve lift cold)

Kelford
In: 302 overall duration(256@1mm), 11.75 cam lift(11.5mm valve lift cold)
Ex: 292 overall duration(250@1mm), 11.3 cam lift(11.0mm valve lift cold)

Cams have different cold valve clearance. All cams are N/A.

throttlehappy46

Stock cam specs from what I have found:
In: 238 overall duration(around 193@1mm), 9.2mm cam lift(9mm valve lift cold)
Ex: 240 overall duration(around 195@1mm), 9.2mm cam lift(8.9mm valve lift cold)

Measured them today

tuko316

subscribed.

did you do a before and after with the tomei cams? do you know how much of a gain you squeezed out with them? to run e85, all that is needed is upgraded injectors, fuel pump and rails?

95BLKMAX

iTrader: (10)

About time someone tried out some cams with big brass ***** hanging at the base LMAO!

Best of luck, and cant wait to see the dyno numbers!!!!! It's when I read thread like this of someone trying to do something that was either that no one had done before, or something that is extremely rare to see on a Maxima... that I actually kinda miss my old Maxima :-\.

95BLKMAX

iTrader: (10)

question, what sort of engine work does your 3.5 have? A cam like the one you're about to put in is just BEGGING for some 8000rpm revs assuming the Intake Manifold is up to the challenge

one_fast_max

iTrader: (4)

95BLKMAX....i'm looking at these cams also....what kinda intake manifold for the 3.5 would be the best for those cams? not SSIM i'm assuming....right??

throttlehappy46

With this particular engine, I did not get a before and after. I have seen a repeatable 240~260Hp from stock engines with stock cams.

E85 required injectors but I have increased base fuel pressure for better atomisation as well. I am also using a Bosch fuel pump, with stock fuel rails converted to '-6' type fittings using Aeromotive fuel line. E85 sees around 27% power gain over our 98RON fuel(equiv to US 93) and has similiar highway crusing fuel economy.

These cams will be as lumpy as the morning after a bowl of laxative chocolate coated peanuts

Cosworth dual valvespring set, cosworth S/S +1 intake valves & inconel +1 exhaust valves. Head has been shaved to raise compression, with deeper valve notches in forged pistons.

I am using the stock Maxima/Altima inlet manifold but the 'elbow' has been cut just before the stock TB flange and two alloy pipes with twin highport SR20DE throttlebodies welded on, using the high port SR20 throttle linkage allowing them to open together. Was never a fan of the pathfinder TB

sparks03max

iTrader: (7)

Sounds like your needs would be much easier met with a 35 shot (or bigger!). That E85 should make for some great detonation protection! With such high compression have you considered meth/water injection? You could probably pull some more power there, as well.

Do you have any dyno charts with your current setup?

grey99max

iTrader: (12)

I'm building a 3.5 using Cosworth CNCed heads and ZK2 cams and a heavily-built shortblock - the cams mostly for the torque for my two-stage nitrous setup - and the SSIM modded UIM with stock elbow and 70mm Pathy TB. I've been having doubts about the present intake setup for the new engine.

Could you explain why you did the dual-TB conversion? And did this perform as you expected? I've even been looking at the Jenvey ITB setup for the VQ35, but that might be a bit over-the-top for a street-driven car - I just don't know enough to be sure.



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NiZMo1o1

iTrader: (45)

I want to see pics of this !

sparks03max

iTrader: (7)

Yeah I wasn't so happy with my SSIM either compared to a stocker with VIAS delete. I picked up a good bit of ET going with the stock manifold, but with your build you'll need more flow. Considering all that $$ going into it, have you considered trying to fit a cosworth plenum?

throttlehappy46

We are not allowed to have nitrous installed in our street cars here, without major fines and confiscation etc. I get pulled over a lot as well so the risks are not worth it
The new cams should be give that last 50Hp I need and take out a few major N/A dyno competitions we have down here

I have dyno charts with the current setup already Getting an overlay of stock cams Vs Tomei cams on Friday.

I had my heads machined locally to my specs based on my experience with E85 in other engines. Inj to valve seat have a little bit more volume than normal

Dual TB conversion was primarily for simplicity because I had access to the the throttle bodies. Since they are good for a SR20 engine up to 8000rpm, then two of them on a engine with only 75% more capacity should have exceptional flow. Also, if I find them to be restrictive later on, a pair of SR16VE N1 70mm throttle bodies can easily be adapted.

grey99max

iTrader: (12)

I've looked long and hard at the Cosworth IM - since it's based on a 350Z, the manifold would have to have major surgery to get the TB in the correct location - plus it's just BIG. Looks like dent-in-the hood time to use that one.

I dunno yet...

grey99max

iTrader: (12)

Wow - two TBs in parallel to give more air flow. You gotta love this guy - chocolate-covered peanuts and all...

What did you measure or discover that made you install the dual TBs??? Did they work out? And have you thought about a 90mm Q45 TB? That one is nearly the area of two 70mm TBs... if my calculator is working right. It's great to have another engine wizard pop up here, so questions are gonna fly.

STILLENGLE

What Kind of Tuning are you using so you can run the e-85 map? utec?

sparks03max

iTrader: (7)

Cut till it fits or have the hood modded. I agree on the TB location. I doubt there's enough room where the TB would be mounted (rear passenger side of the engine) to run an intake pipe down to the bottom of the engine bay for cool air. Those Z guys pick up ALOT of power on the cam/heads cars using this IM, though. Those tuned runners look beautiful!

Crusher103

iTrader: (10)

lol jesus those are some cams forget about street ability lol, in for some estimated whp #

throttlehappy46

Q45 90mm TB: 45mm x 45mm x pi = 2025 x pi
2x SR20DE 65mm TB: 2 x 32.5 x 32.5 x pi = 2112.5 x pi
2x SR16VE N1 TB: 2 x 35 x 35 x pi = 2450 x pi

Since pi is a constant... the Q45 has the smallest surface area. It may have less throttle restriction on WOT with butterfly dowel surface area restriction etc.
Two SR16VE N1 does appear to have 20% more flow potential though and is close to a 100mm diameter TB.

I am actually running a chipped RB25 ECU on this engine(another thread on this forum) to run E85, working on a VQ30 ECU option in the near future.

grey99max

iTrader: (12)

I have an under-the-hood front air intake scoop now, so I get the "freshest" air possible from the front of the car. I already have a 350Z LIM to eyeball in case I want to use some 350Z intake parts.

But - how to get one Cosworth UIM in there?? I'd have to buy one just to see what's possible ($1K), and my hands are full right now. Of course I do have a spare '99 hood to hack on.... Hmmmmm... maybe when the new engine is finally installed.. I wonder how well the Q45 90mm TB would work on the Cosworth? At least it's dual-cable driven, for cruise control...

throttlehappy46

Dyno numbers from a Mainline dyno which usually reads about 10% lower due to a higher drivetrain loss calculation.
Front wheel power / estimated crank power
Tomei on E85: 367.7Hp / 489Hp
Tomei on 98RON: 303.8Hp / 405Hp
Stock cams on E85: 328Hp / 438Hp
Stock cams on 98RON: 271Hp / 361Hp(only a 20Hp gain from 2.2CR increase but I think the tune could have been better since I used the original tune with retarded timing to compensate for CR increase)

Kelfords should break the 400Hp@wheels mark on E85 me thinks... about 450 on any other brand dyno.

VCT does allow the car to be street driven to an extent, the current cams do give a nice lope at the lights though Gets all the Skyline and V8 owners looking around for the source

MOHFpro90

iTrader: (11)

Id really like to see some picture of this.

Also, whered you buy your Iconel valves? I am wondering if a valve oversize is worth the time and $ when doing a 3.0 / 3.5 build... Im planning a build myself, but its going to be a while in the future before anything happens.

throttlehappy46

Cosworth do the valves
http://www.horsepowerfreaks.com/part...formance/12208
I paid a bit less than that locally though at trade pricing

Getting some new photos with the new brakes and radiator taken shortly. Will post up some pictures of the new cams against the old cams as well

I have pics in my photobucket account but there is a guy locally who has been trying to 'copy' my conversion kit. I will link relevant pics without giving away my mounting system

TurboS13Hatch

iTrader: (5)

No need to go that big for a street car.. We're making 300whp, N/A, with JWT's C8 cam profile, an a mildly build, stock bore/stroke VQ35.

Travis

throttlehappy46

Its not really a street car though, its a drag/track car that has street registration for insurance purposes Often gets driven to events.

STILLENGLE

thats gonna be hot. can't wait to see the dyno results.

TurboS13Hatch

iTrader: (5)

Gotcha.. any video/sound clips?

throttlehappy46

Got to upload them to youtube, got a nice video from a recent hill climb event as well. Can hear the car all the way up the mountain

Currently waiting on a new custom clutch from quartermaster. Use an auto flex plate to engage the starter motor for starting the car and a quartermaster 7.25" twin plate V-drive clutch(less than 10lbs total weight!) for power transfer duties Has a huge reduction in MOI as well.

STILLENGLE

very nice, hows the cams sound? did you dyno it yet.

NiZMo1o1

iTrader: (45)

Any pics of this setup ?

throttlehappy46

Car is still at the workshop, waiting on the clutch and the camshafts. Kelford expect to deliver them in about a week, clutch is taking a little longer so far. The clutch is a bargain price compared to any other flywheel + clutch combo as well and the fact I get a superlight setup with a twin plate disc was the icing on the cake