734 Power graphs please - Saxperience

jpsaxo · 22nd January 2009, 10:33

Similar to Toads thread,

Looking for anyone with cat cam 734 power graphs please...

I know G's engine made 189bhp with them fitted, did anyone grab the graph before the thread was deleted?

What about Paulm's engine, is there a graph for his engine?

Cheers

Toad · 22nd January 2009, 10:47

What are these camshafts like when compared to the likes of 803s, 808s, 811s... ?

Sophia_Bush · 22nd January 2009, 10:54

wldest you can go on hydros

jpsaxo · 22nd January 2009, 11:06

Check the cat cam website for exact spec. Need forgies to run them + springs and retainers! Still make peak power around 7k with a well sorted head

I know Pauls made 180 with a standard jp4 head!

boz · 22nd January 2009, 11:07

fook me, thats canny

will they be the same as newman PH4s?

AlexB^p · 22nd January 2009, 11:25

think the ph4s are a tad wilder and need solid lifters

would be interesting to see a proper comparison of most makes
ie
piper kent catcam and newman

just to see the differences in them like as in the middle region they all say different buts about whats needed

boz · 22nd January 2009, 11:28

what were the mods of that car stated above with 180bhp?

i would be good to see a comparision of all the cams available before and after.
but each car is different.
we need a minted user with loads of cash to use his car and have them all fiited and RR'd to compaire

lol

AlexB^p · 22nd January 2009, 11:29

haha i sooo should have done that last year

jpsaxo · 22nd January 2009, 11:38

Paulm's, spec is high comp pistons, standard jp4 head with 734's + boddies, supersprint mani + 2inch exhaust = 180bhp

Toad · 22nd January 2009, 11:40

If you need forged pistons for these cams, why not just go with solid lifters, and put some much wilder cams in?

jpsaxo · 22nd January 2009, 11:51

because you can get near enough 190bhp with 734's...

Toad · 22nd January 2009, 11:55

OK, question then... How much more work is it to change to solid lifters, when you are currently installing forged pistons, retainers and springs?

jpsaxo · 22nd January 2009, 12:02

I already have forged pistons Toad,

I dont think much, im not convinced you can get much more from the solids compared to the 734's in terms of area underneath the line (on the graph) and i cant go wilder than 803's ish with my pistons!

i do have a plan for the stage after 734's but i might as well make the most of having the forged bottom end for now...

wrighty89 · 22nd January 2009, 13:48

when i was looking into this the info i got from qep was;
forged pistons,
big valve head,
734's,
bodies,
standalone,
springs and retainers should be pushing 190bhp.
Any more than that and you will start having issues with the gearbox; keeping it in powerband etc.
The torque curve is supposed to be very unusual but a lot of fun to drive pulling from 3k-ish all the way up to 8k without dropping any power.

Toad · 22nd January 2009, 14:29

Quote:

Originally Posted by jpsaxo

I dont think much, im not convinced you can get much more from the solids compared to the 734's in terms of area underneath the line (on the graph)

Don't follow you bud...

OK, so 803s you need solid lifters, 734s you don't, so you could just pop them in fairly easily. And you don't think there's too much difference between the 803s and 734s? Wasn't aware that your pistons would limit you to 803s. Did you know that at the time? Can you just have them rebated more or will you need new ones completely?

Toad · 22nd January 2009, 14:32

Quote:

Originally Posted by wrighty89

when i was looking into this the info i got from qep was;
forged pistons,
big valve head,
734's,
bodies,
standalone,
springs and retainers should be pushing 190bhp.
Any more than that and you will start having issues with the gearbox; keeping it in powerband etc.
The torque curve is supposed to be very unusual but a lot of fun to drive pulling from 3k-ish all the way up to 8k without dropping any power.

Sounds good to me! But I would say, if you haven't already got forged pistons, might as well go for wilder cams and change to solid lifters at the same time...

Dibz · 22nd January 2009, 18:51

Another good thing with the 734's is that with them making peak power 7-7500rpm you dont need to do much with the gearbox compared to a solid lifter grind making power 8k+

dannygti · 22nd January 2009, 18:58

solid lifters are £££ toadus.

jp, im pretty sure G's made mid 190's with the better qep head.
either way these are imo the best move for you as it wont be too much hassle.
also craig (cupracraig on here) had them on his gti and made around 184bhp.

Toad · 22nd January 2009, 20:02

Oh, I didn't realise dude. This is my quest, as I have the fairly lairy BV head already done, let's hope it pays off.

I think I will just go bodies and standalone first. I'll keep the 708s in, see how she runs etc, and then I'll consider going a step further, which will either be these cams were discussing and forgies, + new springs and new retainers, or I'll go straight for solids and some spastically mental cams.

dannygti · 22nd January 2009, 20:17

Quote:

Originally Posted by Toad

Oh, I didn't realise dude. This is my quest, as I have the fairly lairy BV head already done, let's hope it pays off.

I think I will just go bodies and standalone first. I'll keep the 708s in, see how she runs etc, and then I'll consider going a step further, which will either be these cams were discussing and forgies, + new springs and new retainers, or I'll go straight for solids and some spastically mental cams.

the key thing is your pistons, as thats a £550 step away from the next level up... if you have these then 734's are great as you could sell the 708's and the 734's would cost feck all really. then with your b/v head you could see some fruity power (obviously with boddies). put it into perspective, after you have bought pistons/ecu/tb's/headwork wich is a fair old whack, the solids/cams/retainers/springs cost around £1250'ish. so not cheap. thats why 734's are good as you can save £1000 foir the sake if maybe 5-10bhp.