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Post #1
 3rd December 2003 - 10:28 PM
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.................................?
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My most humble apologies Jen and Kei. The book that I had taken the details from "Heart of the Lion, written by John Wright has the figure around the wrong way with a special note in the rear of the book. You are indeed right KEI, 130kw for the 3.8lt 231ci VR engine, and 147kw for the VS to VT ECOTEC 3.8lt 231ci engine. That is wear the miss print occured in those two power output figures. May certain boost members have forgiveness on me |
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VX-VY 3.8ltr 231ci ECOTEC V6 is 152kw. Rule of thumb to workout flywheel kw to rear wheel kw is minus 30% from the flywheel kw figure to give you a rear wheel figure From memory 1kw = 1.34hp, but don't quote me on that as there appears to be some people who just like to stick the knife in if I get it wrong |
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_J_e_n_
Post #12
haha and some people just have a cry if others correct them when they post up incorrect facts.. |
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To elaborate further, their was actually two versions of the 5.7litre. (which were effectively a stroked version of the 5litre)(They were done by "Holden Engine Company"). They were only ever available in the GTS's and Senator's. The first was as _J_e_n_ stated 215kw. But back then you had the option of getting the 5.7litre engines blueprinted by Holden Racing Team. This option cost $10,000 and booted the power up to 220kw's (they claimed). When the option first appeared they tested a standard 5.7l vs a 5.7l (blueprinted) and the standard one was quicker, which pretty much killed the blueprint option (although a handful were still blueprinted). |
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I'm guessing so, as I have the same thing. I have a 3.2ltr V6 DOHC Rodeo and it's 140kw, the frontera has the same engine and is 150kw. I do know that the DOHC make them heaps "tourquer" off the line. Who would have thought our engines would make better power then the 3.8ltr V6? |
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Enema
Post #23
Remember people.. peak power doesn't mean anything... |
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Phonic
Post #24
The 3.8s in the holdens arn't really revy, because they have 2 valves per cylinder and are pushrod so they don't breath as much and have more moving parts compared to a over head camed 24 vlave V6. |
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they had somthing around 200kW???? |
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king of the concrete jungle
Post #25
The HSV VN SS GRP A 215kw, was a straight engine, unstroked, however had a four-bolts mains block. It was the computer programing and Twin throttle manifold that produced the goods. The VN SS GRP A twin throttle manifold produced 15kw more power then the Walkinshaw (HSV VL SS GRP A) one. The Walkinshaw had a peak power output of 180kw, and it to was unstroked. Holden first used the "stroker" engine in the VR GTS, after they revived the GTS name for the previous VP series. The twin throttle wasn't used on the VP GTS as Holden and HSV didn't want a bonnet buldge, which was neccessary to run the TTB. It did however pick up the four-bolt mains block, and it was 200kw |
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Yeah I did a bit of looking around and found an older Motor Mag and it had a section about the Holden V8. And it stated that if the 215 strokers in the VS had the Twin Trole Body setup of the VN Group A they would have been closer to 280 - 300kW becuase the stock manifold is apparentlly restrictive. |
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The biggest problen with the Holden EFI V8 was it's restrictive breathing system. It pulled like steam train down low and mid range and has a real "animalistic" feel to it, but up high it suffered. Alot of people have this misconception when they work on this engine that they have to stroke it to make it go harder, when in actual fact all that needs is some good head work and proper induction set up. STARR Performance in Melbourne finally woke up to this fact and now make a 90mm throttle body manifold for straight over replacement for about $2000-$2500. It looks identical to the factory "banans" but gives great gains in power, and most importantly torque. The Twin Throttle Body (TTB) set up off the VL HSV SS GRP A or better known as the Walkinshaw, was the first of the TTB's fitted to a factory Holden. It was a great system. Then in the VN HSV SS GRP A a newly developed one was fitted. As I stated earlier it flowed 15kw better then the Walkinshaw TTB. A Walkinshaw or VN SS GRP A TTB these days sells for around $4000-$5000. C.O.M.E. Harrop and Motec all make TTB's systems these days, C.O.M.E. being the cheapest at $2000, to the most expensive being Motec at $8000 The single reason that HSV and Holden didn't run the TTB in the VP GTS and cars after the VN was that they didn't want to have bonnet buldges, which is an unfortunite side effect of having the TTB. You can these days fit a TTB without the bonnet bulge, by having the bonnet bracing cut away and it's a very tight fit trust me, or drop the engine 10mm. These days it's not uncommon for a 215kw Holden EFI V8 to be fitted with a TTB and a few internal mods to give it a genuine 330-350kw @ the flywheel and hell do they get up and move in this form too! |
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