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302 Top End Rebuild - yep, another one! 

 

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Posted: Fri Dec 07, 2007 12:30 am 
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Location: Perth
WA, Australia

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Posted: Fri Dec 07, 2007 12:42 am 
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Ride: EL XR8, '08 Mondeo XR5t

Power: 205 rwkw

Location: Perth
WA, Australia

How do you know if it's pinging and how long can it ping for before the ping turns to a pong?

I will also be getting the cats checked out next week. One of the other issues is leaking headers which have to come off, so when they come off the cats can come off too.

Calculated compression ratio? *sHrUgS*

 

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Trickflow Street Heat top end kit, 70mm BBK TB & EGR, 24lb injectors, Underdrives & 3.73s: 275rwhp - 13.15@105mph NA / 12.37@116mph N20

When injustice becomes law, resistance becomes duty

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Posted: Fri Dec 07, 2007 12:53 am 
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30 degrees on your engine in that configuration is just plain wrong.

But are you sure it's only 30. Have you had it checked with a digital timing light etc.

It will go to 36 with no drama's. But as far as pinging goes its easy to hear under load.

But if you're that unsure I will be working on mine all weekend and you're welcome to drop around and I'll put a light on it and check it, advance it etc and we can test run.
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Posted: Fri Dec 07, 2007 1:06 am 
Getting Side Ways
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Ride: EL XR8, '08 Mondeo XR5t

Power: 205 rwkw

Location: Perth
WA, Australia

{USERNAME} wrote:
30 degrees on your engine in that configuration is just plain wrong.

But are you sure it's only 30. Have you had it checked with a digital timing light etc.

It will go to 36 with no drama's. But as far as pinging goes its easy to hear under load.

But if you're that unsure I will be working on mine all weekend and you're welcome to drop around and I'll put a light on it and check it, advance it etc and we can test run.


I haven't had it checked with a digital timing light. Is that different to a normal timing light? Terry told me that to set the timing, they put it in diagnostic mode and set it to 30. Then ignition timing is controlled via the twEECer. Apparently from there at WOT it should be 30deg, +/-2deg.

Trick Flow told me that when it's running correctly it should have 13-14deg at the balancer. I assume that is read using a normal timing light.

Mate, I'll definately take you up on the offer to check it out over the weekend. I'd appreciate that greatly.

 

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Trickflow Street Heat top end kit, 70mm BBK TB & EGR, 24lb injectors, Underdrives & 3.73s: 275rwhp - 13.15@105mph NA / 12.37@116mph N20

When injustice becomes law, resistance becomes duty

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Posted: Fri Dec 07, 2007 9:12 am 
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Ride: BA XR6 Ute

Location: Brisbane - Perth
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with your idle dropping out man, just give your throttle body a good clean, the ute was doin it really bad for a while, got in and cleaned the TB and no more dramas.

 

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Posted: Fri Dec 07, 2007 12:46 pm 
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Ride: T1 TE50 P01

Location: Perth NoR
WA, Australia

{USERNAME} wrote:
with your idle dropping out man, just give your throttle body a good clean, the ute was doin it really bad for a while, got in and cleaned the TB and no more dramas.


That won't solve the issue he is having, it is timing/tune related.

The info that TFS have given you is partially correct, in a standard carb engine you would run about 14-16 initial advance, however our efi 5.0s run more than this, the distributor is locked and the timing controlled through the ECU.

Be careful of over advancing the base timing, it can lead to other problems with hunting at idle. 36 degrees may cause detonation especially if the the quench area in your combustion chamber is not optimised. I'd suggest increasing the base timing in 2 degree increments until you start detecting pinging or detonation. If you don't know what you are listening for, DON'T try this alone, get the assistance of a competant friend/mechanic to assist you.

I maintain that there is a lot more 'potential' in the components you have, as I believe I told you before you purchased this kit we have made 286rwhp with the same heads, but not that camshaft...

Hope it does work out for you in the end! :)

 

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Posted: Fri Dec 07, 2007 3:59 pm 
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Trick flow are yanks and don't realise that Oz eecs use a base setting of 30deg.
Oz cars don't have a spout plug for setting the base spark which is 10deg in the U.S.
Also the yanks use dynojet inertia dynos primarily so their figures are artificially inflated. For instance the EL I know of with the same combo as yours made just over 300hp on a dynojet and 252hp on an eddy current job before tuning.
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Posted: Fri Dec 07, 2007 11:42 pm 
Getting Side Ways
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Ride: EL XR8, '08 Mondeo XR5t

Power: 205 rwkw

Location: Perth
WA, Australia

Wow XR9UTE, that's a huge difference. I'd be interested to know the result after a tune as that's about what I have now after the tune.

BOTTLEDUP - as far as doing anything on my motor, I won't be doing s**t unless I know the person knows what they are doing. I'll definately not be attempting anything solo. Cheers for the warning though.

 

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Trickflow Street Heat top end kit, 70mm BBK TB & EGR, 24lb injectors, Underdrives & 3.73s: 275rwhp - 13.15@105mph NA / 12.37@116mph N20

When injustice becomes law, resistance becomes duty

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Posted: Sat Dec 08, 2007 11:47 am 
Getting Side Ways
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Joined: 14th Jan 2007

Ride: T1 TE50 P01

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WA, Australia

{USERNAME} wrote:
BOTTLEDUP - as far as doing anything on my motor, I won't be doing s**t unless I know the person knows what they are doing. I'll definately not be attempting anything solo. Cheers for the warning though.


No stress mate, just wanted to be sure. ;) Hope you get to the bottom of it soon!

 

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Posted: Sat Dec 08, 2007 6:26 pm 
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Ride: EFII 5.8 NOS TerroristGhia

Power: 274 rwkw

Location: Sydney Australia
NSW, Australia

Q i have is what sort of Dyno was used and the torque figures please.
Ran mine up again today for a little more finetuning and made 174rwkw and 480nm. It is in the mid to high 400's for torque from 3500rpm til 6200rpm. This was achieved on a mainline dyno at CMS. last tune i went straight to a nameless DD dyno and picked up 15rwkw for a total of 189, from the previous 174rwkw.
Today was a s**t humid day and and was actually down 10rwkw from same time last week. Main resaon for the run today was to see the effects of the NOS kit and ensure it wasnt lean. Made a lazy 211rwkw and 570nm with the gas kit.

What i am trying to get at is the power figure doesnt really mean much, but is impressive for bragging rights, its torque that wins races.
Look out 12's if it doesnt rain Wednesday.
Good luck and hope it gets sorted real soon
Brett

 

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Millennium Falcon, Sleeper EL DOHC 6 Speed Manual EFI LPG
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Posted: Sat Dec 08, 2007 7:42 pm 
Getting Side Ways
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Age: 46

Posts: 1887

Joined: 26th Nov 2006

Gallery: 7 images

Ride: EL XR8, '08 Mondeo XR5t

Power: 205 rwkw

Location: Perth
WA, Australia

Yeah, the numbers aren't my issue. It was done on a DD as well. The torque is around 520nm but if you have a look at the sheet on page 8, you'll see that it's pretty sad under 3500 and the power band isn't all that broad.

It's pretty messy all round.

Am considering changing the headers as I've been informed that mine are too big for the current set up which could also have a helluva lot to do with my dramas.

 

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Trickflow Street Heat top end kit, 70mm BBK TB & EGR, 24lb injectors, Underdrives & 3.73s: 275rwhp - 13.15@105mph NA / 12.37@116mph N20

When injustice becomes law, resistance becomes duty

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Posted: Sun Dec 09, 2007 5:02 am 
Getting Side Ways
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Age: 53

Posts: 3763

Joined: 25th Nov 2004

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Ride: EFII 5.8 NOS TerroristGhia

Power: 274 rwkw

Location: Sydney Australia
NSW, Australia

Mine is also a slug under 3500rpm, but in my case is more as a result of big cam than anything else. I still think to improve bottom end change back to a 65TB. It made a world of difference to mine, but i gave up a few KW right at the top end.
Brett

 

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The Terrorist ED Retired due to RUST.
The TerrosistGhia, EF Ghia 351 EFI 5 Speed.
Millennium Falcon, Sleeper EL DOHC 6 Speed Manual EFI LPG
Member#1131
I didn't Vote for Multiculturalism, DID YOU!!!

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Posted: Sun Dec 09, 2007 9:26 am 
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WHo are these 2 losers

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Posted: Sun Dec 09, 2007 11:18 am 
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Ride: 1999 XHII XR8, 2002 AU Fairmont

Power: 236 rwkw

Location: Perth
WA, Australia

{USERNAME} wrote:
WHo are these 2 losers


Dunno, cant see them, ones holding the camera and the other ones next to them.

 

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Posted: Sun Dec 09, 2007 3:28 pm 
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How long ago was that pic? Those stands are lookin mighty empty.

 

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