Heron's VK SL Build – LS3, TH400, Sleeper Style

[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]

You talking rwhp or rwkw?

[Heron SSVParticipant Central Coast NSW2009 Pajero Exceed 84 VK SL LS3 View build HERE Member since: May 5, 2015 Posts: 585]

VRSenator065 wrote:

You talking rwhp or rwkw?

rwhp

[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]

Got told by someone once, rule of thumb is flywheel kW = rear wheel horsepower.  I am guessing it’s going to make say 350kW at the flywheel, so that equates to approx 350 rwHP.

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

Will go 300kw 400rwhp IMO

[Heron SSVParticipant Central Coast NSW2009 Pajero Exceed 84 VK SL LS3 View build HERE Member since: May 5, 2015 Posts: 585]

So there’s good news and bad news. The good news is that the car is running perfectly on the dyno up to 4 grand, everything is spot on, oil pressure, temp, no funny noises. Bad news is that it’s running out of fuel when it revs over 4 grand. Seems to be a fuel supply issue, either there is a pinch in the fuel line somewhere, the pump intake is partially blocked, or I have mounted the pump too far down on the hanger and it’s too close to the bottom of the tank. The tuner is going to pull the pump out and have a look. The saga continues.

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

It’s all part of the fun. Hopefully it’s something simple like the fuel pump hanging too low. If it’s a linked line you will most likely see that

[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]

Yea I agree with Cav, actually for “bad” news thats probably good if that makes sense.  Prob something quite simple.

[Heron SSVParticipant Central Coast NSW2009 Pajero Exceed 84 VK SL LS3 View build HERE Member since: May 5, 2015 Posts: 585]

Thanks guys, yeah i’m hoping its something simple. Keen to get it back and start putting it back together. Spent the weekend working on the bonnet, more sanding and primer, sanding and primer, sanding and primer. Feel like I’m polishing a turd, but it’s slowly getting better. Definitely will be on the hunt for a new bonnet next year.

[Heron SSVParticipant Central Coast NSW2009 Pajero Exceed 84 VK SL LS3 View build HERE Member since: May 5, 2015 Posts: 585]

Finally all done. The fuel issue was the hose on the hanger that runs from the pump to the hardline on the hanger, it was leaking, the hose had started to deteriorate for some reason. The hose was replaced and it was all good. Ended up making 320rwhp, lower than I thought but the tuner said the high stall and TH400 suck more power out of them, said it’s making up around the 450 mark at the fly. A/F ratio was dead flat, it’s running perfectly. Everything else is fine, they went over the whole car and mechanically it’s ready to hit the road. Now I need to find some extra cash to pay for the extra work the had to do haha

[Judge1 FrazerParticipant new zealand1983 VB LSA MG9 6060 6 speed View build HERE Member since: February 5, 2016 Posts: 775]

That’s awesome bud that will get the old girl going for sure

[Heron SSVParticipant Central Coast NSW2009 Pajero Exceed 84 VK SL LS3 View build HERE Member since: May 5, 2015 Posts: 585]

Judge1 Frazer wrote:

That’s awesome bud that will get the old girl going for sure

cheers mate, yep should get up and boogie nicely

[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]

320rwhp, by my rule of thumb calc means 320 fwkw, which is 430fwhp which is around what they are saying.  Imo peak HP is such an overstated number, its a pub pissing contest.  It’s all about the shape of the power curve to produce it on a streetcar.  Peaky engines are a bitch on the street.  It will spend most of its life around 3,000 rpm, when you boot it at that, thats when you want it to stand up.  It will boogie mate, no doubt about that.  Top work.

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

Stock they are rated at 430hp. With tune and a few bolt ons it should be around 450ish.

Some will say your figure is low, but thru a stalled t400 and a 9inch it’s about right. If it had a t56 or t6060 it would be closer to 300kw

[Heron SSVParticipant Central Coast NSW2009 Pajero Exceed 84 VK SL LS3 View build HERE Member since: May 5, 2015 Posts: 585]

Thanks lads. Picking it up tomorrow morning. Keen to get it home and sort out a list of whats needed to get it back together. Got one month to get it on the road for my kids formal, time and funds are running out at a very fast rate haha

[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]

Heron SSV wrote:

time and funds are running out at a very fast rate…

Said every builder of car like this towards the end!!

[Heron SSVParticipant Central Coast NSW2009 Pajero Exceed 84 VK SL LS3 View build HERE Member since: May 5, 2015 Posts: 585]

VRSenator065 wrote:

Heron SSV wrote:

time and funds are running out at a very fast rate…

Said every builder of car like this towards the end!!

Hahaha yeah true mate.

There’s a dyno video up on Facebook. Search for DC Tuning & Mechanical, they’re based at Wyong on the Central Coast. They just put the dyno vid up.

[SLE355Participant View build HERE Member since: April 7, 2015 Posts: 119]

Too bad you can’t post the vid here.

• This reply was modified 5 years ago by  SLE355.
• This reply was modified 5 years ago by  SLE355.

[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]

Post the vid to YouTube then link to here.  That’s what I do .There’s a really simple hack to download any vid off Facebook off your PC.  Just change the http bit to m, Google is your friend 😀

[sands vsParticipant vs commodore View build HERE Member since: March 1, 2015 Posts: 619]

I saw the video dam it sounds nice

[Heron SSVParticipant Central Coast NSW2009 Pajero Exceed 84 VK SL LS3 View build HERE Member since: May 5, 2015 Posts: 585]

VRSenator065 wrote:

Post the vid to YouTube then link to here. That’s what I do .There’s a really simple hack to download any vid off Facebook off your PC. Just change the http bit to m, Google is your friend 😀

I’ll have a poke around and see what i can do.

sands vs wrote:

I saw the video dam it sounds nice

Cheers mate, yep it’s got a nice note to it.

Finally had a great weekend with the VK. Picked it up saturday morning, chatted to the tuner who said everything is perfect. Ran great on the dyno, A/F was dead flat all the way hovering on 12.5, motor pulled all the way to 6400. Unloaded it from the trailer and went for a little squirt up the road, it’s heaps toey down low, torque is awesome, has a nice quiet note at idle but opens up when you give it a bit. Also did a small skid in the garage haha.

Dyno sheet reads 239.9rwkw and 1261NM.

Started on the bodywork on Saturday and continued yesterday. Wet sanded the roof, C pillars, both rear guards and the boot. All the marks and crap that was on it are gone, all the peel from painting it in the garage at home in winter is gone and it’s silky smooth ready for buffing. Next is the doors and front guards, bolt the guards on, check over the bumpers and probably give them another few coats of clear before they go on.

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