SV5000 – 383 Stroker

[vs manta 218Participant Vs hsv manta View build HERE Member since: March 2, 2015 Posts: 796]

What rpm did it go to on the dyno you have pic of on last page ??

It’s only 170km/h

Correct me if I’m wrong but you have 3.9 with t56 ??

At 6100rpm with 25.5 inch tyres witch a holden vn-vz has, (sometimes 26inch like my 20s) you should do 190km/h in 4th gear with a 1 to 1 ratio at 6100rpm

25.5 inch total tyre size
3.9 diff gears
4th gear (1.0 ratio)
5450rpm = 170km/h

And that’s the very end of you graph well after power had fallen over

Don’t count out clutch slip

How do you know the clutch wasn’t slipping on dyno ??

[VPGTS76Participant VP GTS Build 076 View build HERE Member since: March 2, 2015 Posts: 33]

Isn’t that what I said few posts ago???

 

Disconnect secondary throttle link and u will get power increase and that will prove theory.

 

Get kalmaker tune done….

 

 

 

 

 

[vs manta 218Participant Vs hsv manta View build HERE Member since: March 2, 2015 Posts: 796]

VPGTS76 wrote:

Isn’t that what I said few posts ago???

Disconnect secondary throttle link and u will get power increase and that will prove theory.

Get kalmaker tune done….

Yeah when you said it I remembered it had km/h on dyno and seen it was 170 and emidently thought that’s low

[VPGTS76Participant VP GTS Build 076 View build HERE Member since: March 2, 2015 Posts: 33]

Hi pete,

 

i was was talking more around Ecu…. Your above comments are also very viable…

 

hope he gets it sorted and enjoys it.

 

for the record my GTS had a single throttle tune in mine and I was lucky as was lean as fuck…

[cava454Moderator 93 VR BT1 View build HERE Member since: February 20, 2015 Posts: 2 390]

VPGTS76 wrote:

Isn’t that what I said few posts ago??? Disconnect secondary throttle link and u will get power increase and that will prove theory. Get kalmaker tune done….

regardless where it made the 390 or not. It’s all of a sudden lost power whilst in his position. It’s got nothing to do with tune. Double check everything. Could possibly be something as stupid as MAT sensor. I had issue with mine. Although mine lost power as it gradually got hotter.

Do the test as is said and go from there. Wouldnt bother checking cam timing. Even if its out, it hasn’t moved from when u first got it. Wiped a lobe is prob worse case

• This reply was modified 9 years, 6 months ago by  cava454.

[Anonymous View build HERE Member since: January 1, 1970 Posts: 0]

You’d hear the clutch slipping on the road or the dyno and smell it on the dyno. Clutch is fine. Limiter is set at 6300.

The car doesn’t magically lose its tune. It’s not tune related.

[VRSenator065Participant Adelaide SAVR Senator LSx454 1960 Kombi (project) 1921 Nash Hot Rod (future project) View build HERE Member since: February 17, 2015 Posts: 5 777]

^I sort of agree, it’s the loss of power that is key. Something has changed/failed/moved, tunes don’t. Surely a 383 anything should turn the tyres in almost any gear wouldn’t it? IMHO, situations like this you go back and check the basics first, then go from there. Hope you get it sorted buddy.

[Slow355Participant Victoriahectic spec 355 vs ss ute View build HERE Member since: March 2, 2015 Posts: 322]

As cav stated it doesnt add up, i read that you did a 13.8 quarter. My 260 rwk 355 did a 13.1 on a shit prepped track and prob a high 12 at a good track. So cant see the hp claim been true that old owner made.

Has it thrown any fault codes or anything? Stupid question, but air intake is clean? My ute runs like bum hole as soon as filter needs cleaning. Chokes up and get a really bad idle and lacks top end power.

munch munch ls1s for lunch
Best 1/4 mile 13.1@105mph 60ft-1.8sec Reaction time .8 sec 0/100-4.8sec

[cava454Moderator 93 VR BT1 View build HERE Member since: February 20, 2015 Posts: 2 390]

Slow355 wrote:

As cav stated it doesnt add up, i read that you did a 13.8 quarter. My 260 rwk 355 did a 13.1 on a shit prepped track and prob a high 12 at a good track. So cant see the hp claim been true that old owner made. Has it thrown any fault codes or anything? Stupid question, but air intake is clean? My ute runs like bum hole as soon as filter needs cleaning. Chokes up and get a really bad idle and lacks top end power.

MPH doesn’t lie…

[Slow355Participant Victoriahectic spec 355 vs ss ute View build HERE Member since: March 2, 2015 Posts: 322]

He pushing out 1mph more than me and i have a genuine 411hp motor

munch munch ls1s for lunch
Best 1/4 mile 13.1@105mph 60ft-1.8sec Reaction time .8 sec 0/100-4.8sec

[cava454Moderator 93 VR BT1 View build HERE Member since: February 20, 2015 Posts: 2 390]

That’s my point….

[Anonymous View build HERE Member since: January 1, 1970 Posts: 0]

Intake is clean. Made 2rwhp more with the intake removed. See we have crossed most of these little things off and no closer to a solution. I haven’t raced it. The old owner claimed it did a 12.8 (don’t know mph) in its current state.

Couple of other things to note.

It was throwing a check engine light every now and again and I noticed the intake was loose. I tightened it all up with new connectors and clamps and it hasn’t done it again. Also it has backfired on a few occasions between gear changes on wot. Lastly it is feeling a lot of jerky at low rpm when cruising along. Remember I drove this back from qld and it was nice as smooth the whole way.

Final thing was on the way back from qld when I stopped at a set of lights near Newcastle the speedo was bouncing around. Hasn’t done it again.

[Slow355Participant Victoriahectic spec 355 vs ss ute View build HERE Member since: March 2, 2015 Posts: 322]

So when light came on what code did it give u?

munch munch ls1s for lunch
Best 1/4 mile 13.1@105mph 60ft-1.8sec Reaction time .8 sec 0/100-4.8sec

[vs manta 218Participant Vs hsv manta View build HERE Member since: March 2, 2015 Posts: 796]

What ecu does this run ??

[Anonymous View build HERE Member since: January 1, 1970 Posts: 0]

Runs a delco.

So I just spoke to the engine builder in QLD who was extremely helpful.

It is definitely a COME 383 roller motor. He confirmed it never had a custom tune and was only running the stock COME chip to go with the COME CSBR436 cam that’s in it.

On his dyno it was making 370rwhp or thereabouts and reckons the motor should do more with a custom tune as its full of good bits. Although its got only probably 10,000kms on the motor it was refreshed around 11yrs ago.

His suggestion is a dizzy issue or something playing up with the crane ignition setup that’s on it.

[KAL SPLParticipant Orange NSWL67 VS Calais FSM Niki VS GTS/R replica View build HERE Member since: February 18, 2015 Posts: 64]

Have you had the ecu scanned for viruses ?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

:P

• This reply was modified 9 years, 6 months ago by  KAL SPL.

[Slow355Participant Victoriahectic spec 355 vs ss ute View build HERE Member since: March 2, 2015 Posts: 322]

So it through a warning light and u haven’t checked what it is?? Could be a gucked sensor etc so I would check what fault code it is

munch munch ls1s for lunch
Best 1/4 mile 13.1@105mph 60ft-1.8sec Reaction time .8 sec 0/100-4.8sec

[Anonymous View build HERE Member since: January 1, 1970 Posts: 0]

No as it hasn’t done it again. I’ll have to find the procedure for it and check though.

I’ve got a new MAT sensor here for it as well at a new tps and map sensor so after that every sensor on the thing is new.

[VS 5.0Participant Perth WAVE SSV Z Series M6 View build HERE Member since: March 31, 2015 Posts: 118]

Anonymous wrote:

Lastly it is feeling a lot of jerky at low rpm when cruising along.

Have a look inside the dizzy cap and at the rotor button. My cap was arcing out on the rotor and causing these symptoms. The rotor had black burn marks on it.

• This reply was modified 9 years, 6 months ago by  VS 5.0.

[Anonymous View build HERE Member since: January 1, 1970 Posts: 0]

Whole new dizzy going in on Saturday. Fingers crossed we’ll find the problem via process of elimination soon enough.

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