vh45 dyno

Post by **gs14racer** » Tue Jul 03, 2007 3:43 pm

Thought you guys would be interested even though you hate dynos lol

specs

vh45de in a 96 240sx300zx 5 speed12 lb flywheel12 driveshaft

intakeheaders 1 3/4 primarys with 3 inch merge collectors3 inch dual exhaust with x pipestock ecu

Post by **NOR*CAL 916** » Tue Jul 03, 2007 4:15 pm

what are the horse power/torque numbers?

Post by **lino** » Tue Jul 03, 2007 4:16 pm

I don't hate dynos

Looks strong

Thanks for sharing. Now we'll need some pics, please and thank you.

Post by **gs14racer** » Tue Jul 03, 2007 7:10 pm

numbers are 273 wheel horsepower274 wheel torque

Dont make fun of the duct tape you have no idea how diffiicult it is to find a 3.5 inch silicone coupler at 4pm on a sunday.

Post by **94infinitiq45** » Wed Jul 04, 2007 1:58 am

Hey i am actually looking to do a 6 speed conversion in my car because the automatic has too many dead spots. Which clutch and flywheel did you use and also what did you have to do with the bellhousing to get it to work?

Post by **NOR*CAL 916** » Wed Jul 04, 2007 9:47 am

awesome build, do you have MPG figures?

Post by **elwesso** » Wed Jul 04, 2007 9:52 am

NOR*CAL 916 wrote:awesome build, do you have MPG figures?

Dont take this the wrong way, but who cares about MPG?????

This is a Nissan 240sx with a VH45 and you're worried about MPG..... 275WHP on a STOCK VH45 with just headers. STOCK ECU. Proves that headers do the VH very good and the AT sucks down a lot of power!!! Probably putting down 320-330 flywheel HP and we havent even gotten him a NICO ECU. Will probably see 300WHP with the ECU, at least I hope. His AFR's were pretty rich, the NICO ECU should put him the 15:1 range which ismuch leaner than the 12-13:1's he was having.

94infinitiq45 wrote:Hey i am actually looking to do a 6 speed conversion in my car because the automatic has too many dead spots. Which clutch and flywheel did you use and also what did you have to do with the bellhousing to get it to work?

>><<

Post by **lino** » Wed Jul 04, 2007 10:34 am

Thanks for the pics! Looks awesome and best of luck with it.

The headers look sick!

Post by **elwesso** » Wed Jul 04, 2007 10:37 am

Heres the build-up thread!!!!

zerothread/231283

Post by **gs14racer** » Wed Jul 04, 2007 7:18 pm

yea gas milage aint high on my priority list with this car

Post by **ScottJackson** » Wed Jul 04, 2007 8:16 pm

Hey, to me a VH45 is very much an economy engine. I tried for way too long to figure out a way to put one in my '69 mustang. The engine I have built for it is a 514" ford V8 (and looks like it'll still be going in the car). 4.5L would have got me much better mileage than the 8.4L ford. And to think, a 514" is a medium size motor to the big block ford guys. A "big" engine is generally anything from 600" to 800+ci. Just putting it all in perspective...

Post by **Q45tech** » Thu Jul 05, 2007 4:57 am

Curious as to why you opted for such long tuned header pipes to peak the torque so low in rpms?

Post by **qship96** » Thu Jul 05, 2007 8:25 am

torque peak looks to be 4750 rpm or so,you consider that low? isnt stock peak at 4000rpm?

Post by **Q45tech** » Thu Jul 05, 2007 9:18 am

http://www.bgsoflex.com/bestheader.html

Without inside runner diameter and exact length from exhaust valve to collector it was just a photo guess. 39-48"

Fill in your numbers and report what the software says. Obviously the software can only be right +-5% length due to cams and stroke variances.

Post by **elwesso** » Thu Jul 05, 2007 10:48 am

Good link tech, how does that work?

Post by **gs14racer** » Thu Jul 05, 2007 2:39 pm

the runners are 31.5 inches long give or take a 1/4 inch. As far as technical aspects are concerned i modeled them after some pics i saw on line. dont know much in the way of the technical jargon, looks better than stock though.

Post by **gs14racer** » Thu Jul 05, 2007 2:41 pm

this is the number it gave me by the way

The best header tube length to use is: 23.930029

Post by **Rex** » Thu Jul 05, 2007 5:39 pm

elwesso wrote:... Proves that headers do the VH very good and the AT sucks down a lot of power!!!

I agree with the first part, but what makes you say the second part?

Are you thinking I'm losing 20-30 more HP than him due to the AT?

Just curious about your logic.

Post by **Jeff Williams** » Sat Jul 14, 2007 1:13 am

Awesome! I love dyno sheets. It looks like you have about 30 more RWHP than Lola. I need some headers...

I bet that intake pipe helped with the power, too. Straightening out the intake and exhaust really helps with the power on these cars.

When I get my new welder, I am going to attempt some headers on the car. Maybe, if I get good at it, I can make a few sets. I need to make a set for the GMC V6.

I want to make a true fresh air intake for the car with no restrictions like the factory box, too.

Post by **elwesso** » Sun Jul 15, 2007 5:10 pm

Maybe not but it just seems that hes' making as much power as your car is without any ECU mods.

vh45 dyno

vh45 dyno

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