Viper's engine swapped B16A2 OHC - Now Turbo Charged!! - Page 51 - Team-BHP

dinar · 4th May 2008, 11:10

Just went through the article, it's great, hoping to see the new steering wheel and the seats.

Cyrus43 · 4th May 2008, 11:23

Quote:

Originally Posted by viper

Hi Guys,

Thanks a lot for all the comments.

@ Patiencewills & Jaggu - The steering wheel was already replaced after the shoot will post the new pics soon. Also the front seats have now been upholstered to match the rest of the seats.

The daily rev limit is going to be set at 9000 RPM though I very rarely hit that spot. Am waiting for Karthik to find time to enable using 2 maps on the ECU. Once done it will be just the flick of a switch required to let all the horses scream all the way to 10000 RPM.

Some more goodies are being lined up in this month. Keep watching to see what goes in next.

Viper

What more are you going to put on the car now?? Wings and Rocket Boosters??

jiggy, do you have any idea if karan is working on a yellow cedia with black wheels? and if yes, what is under the hood of it? because that car has replaced the supra at karans house in DPC.

dipen · 4th May 2008, 11:24

Quote:

Originally Posted by viper

Some more goodies are being lined up in this month. Keep watching to see what goes in next.

Viper

Most boost ? bigger turbos ? NOS ?

ssjr0498 · 5th May 2008, 14:49

Hi Viper,

there's something that i'm trying to understand from a long time. In this thread you mention that your car's vtec has not been working from the time you got ur turbo/ecu!

If that is the case, how is the car producing power at such high revvs! If I get the Vtec principle right, the car can no doubt revv but the power should have started to platue from where the vtec lobes are designed to take on!!

However, this does not seem to happen in your case. Even if you are using custom grind cam's in that case I am sure you must have gotten cams designed to give you power much lower down the revv's and if not then you are using higher lift lobes which is in a way like using vtec..as this car is your daily drive I believe.

Can you please explain! I am really very confused.

Also pardon me if there is something that I said which sounds very stupid.. I'm just learning.

Cheers,
Shrey

1fstndn · 5th May 2008, 21:06

Quote:

Originally Posted by RJK

Gautam bhaiya,
He's not missing anything..american slang

Thank you Sir.

kastaway · 6th May 2008, 11:25

Quote:

Originally Posted by ssjr0498

Hi Viper,

there's something that i'm trying to understand from a long time. In this thread you mention that your car's vtec has not been working from the time you got ur turbo/ecu!

If that is the case, how is the car producing power at such high revvs! If I get the Vtec principle right, the car can no doubt revv but the power should have started to platue from where the vtec lobes are designed to take on!!

However, this does not seem to happen in your case. Even if you are using custom grind cam's in that case I am sure you must have gotten cams designed to give you power much lower down the revv's and if not then you are using higher lift lobes which is in a way like using vtec..as this car is your daily drive I believe.

Can you please explain! I am really very confused.

Also pardon me if there is something that I said which sounds very stupid.. I'm just learning.

Cheers,
Shrey

You have a valid point, if viper is not in position to explain can some1 expert chip in his views @ psycho you listening?

viper · 6th May 2008, 12:08

Quote:

Originally Posted by ssjr0498

Hi Viper,

If that is the case, how is the car producing power at such high revvs! If I get the Vtec principle right, the car can no doubt revv but the power should have started to platue from where the vtec lobes are designed to take on!!

Can you please explain! I am really very confused.

Cheers,
Shrey

Hi Shrey,

Simple answer Turbo. Once you see the new chart after Vtec comes on maybe you will see the difference.

Viper

PatienceWins · 6th May 2008, 12:15

Quote:

Originally Posted by viper

Hi Guys,

The daily rev limit is going to be set at 9000 RPM though I very rarely hit that spot. Am waiting for Karthik to find time to enable using 2 maps on the ECU. Once done it will be just the flick of a switch required to let all the horses scream all the way to 10000 RPM.

Some more goodies are being lined up in this month. Keep watching to see what goes in next.

Viper

Awesome!! Please keep us updated.

balenopower · 6th May 2008, 13:53

Read the review on motoring.Very impressive.

Shan2nu · 6th May 2008, 15:42

Quote:

Simple answer Turbo. Once you see the new chart after Vtec comes on maybe you will see the difference

Im eagerly waiting for that as well. Coz even i got a bit confused after seeing the chart. No doubt, with enough boost you can make an engine produce loads of power without vtec but at what rpm?

Even if you do use a Turbo, you should basically see an increase in torque throughout the revv band. So if an engine with vtec disabled produces max torque and power at certain rpms, the torque and power will increase but i dunno if the rpm points will shift by this much.

When the cam is designed for reduced lift and timing, theres only so much a turbo can do to increase max torque/power rpm. Unless your custom low lift cams are as aggressive as the stock B16 vtec cams.

Heres a comparo between an NA B18C5 and a TC B18C5. You will notice that even though the torque and power have increased a hell lot, the rpm where they max out are still very similar.

NA B18C5 - Dyno - B18C5 Jun3

TC B18C5 - Dyno - B18C5 turbo

Anyway, lets wait for the results once the vtec is back n running. Only that can solve this confusion.

Shan2nu

Psycho · 6th May 2008, 19:53

I dunno what value I can add sitting here on the thread. There are a few points that can be brought out based on the info available with me:

1. Would expect a jump when the vtec kicks in but that could be reduced due to many factors like tuning due to higher compression
2. Frankly speaking I cant understand as to how the engine is revving out so far without the vtec functioning, would expect it to die a lot quicker. Unless it is being pushed till the turbo builds enough boost to continue revving the engine which I think would be the case. An easy way to identify this would be for jiggy to confirm if the car has been sluggish till about 5000rpm
3. I have been told the VTEC is working now amd can be confirmed with a distinctive change in exhaust note and a surge
4. Would like to see an updated dyno sheet before i comment again

viper · 6th May 2008, 20:21

Hi Guys,

Let me try and explain the problem in simple english. Prior to Turbo Charging the car there was a distinct and loud change in the exhaust note coupled with a boost in power at around 5200-5300RPM when the Vtec would kick in. After TC'ng the car the change in exhaust note was not there. The car was more sluggish & less torquey then before TC. That is how I came to the conclusion that the Vtec was not working I could be wrong but I very much doubt that as you can read from the below para.

Why the Vtec was not working is more of a mystery to me as well. IMO it was mostly a wrong wiring connection by the electrician. on 1st May when Karthik came to Mumbai he sorted out the Vtec issue and that was the first time I heard the Vtec exhaust note change at 5300 RPM. The car feels much peppier now.

I will most probably be dynoing the car tomorrow if Karan is free and I hope that the new dynograph can answer the queries raised here.

Viper

netchef · 6th May 2008, 20:26

Quote:

Originally Posted by viper

Hi Guys,

Let me try and explain the problem in simple english. Prior to Turbo Charging the car there was a distinct and loud change in the exhaust note coupled with a boost in power at around 5200-5300RPM when the Vtec would kick in. After TC'ng the car the change in exhaust note was not there. The car was more sluggish & less torquey then before TC.

Why the Vtec was working is more of a mystery to me as well. IMO it was mostly a wrong wiring connection by the electrician. on 1st May when Karthik came to Mumbai he sorted out the Vtec issue and that was the first time I heard the Vtec exhaust note change at 5300 RPM. The car feels much peppier now.

I will most probably be dynoing the car tomorrow if Karan is free and I hope that the new dynograph can answer the queries raised here.

Viper

In my books you'd rate as a genius of an engineer (even if you aren't one- in fact more especially so then).

Shan2nu · 6th May 2008, 20:57

Quote:

I will most probably be dynoing the car tomorrow if Karan is free and I hope that the new dynograph can answer the queries raised here.

Great, it'l be interesting to see by how much the power increases and more importantly, where it is produced.

Shan2nu

HPP · 7th May 2008, 03:53

The car shouldn't have any issue making power or revving out with the vtec disengaged. It will just not pick up any power that it would have at the point where the vtec would normally have engaged. In essence it is running on a milder cam and will make power based on that. The new graph should show the same graph until vtec kicks in and from there the hp should rise and possibly the tq may drop(may be off on that one).

In any case, for vtec to operate, you need proper levels of oil pressure, and all the wiring to be correct(assuming all mechanical is in order).. fairly simple.

Also, now that the vtec is engaging, the air fuel ratios should be leaner in the vtec range of the graph. I'd take it easy until you richen up that part of the map.

5th May 2008, 14:49	#754 (permalink)
ssjr0498 BHPian Join Date: Mar 2006 Location: Bang-a-lore Posts: 120 View My Garage	Hi Viper, there's something that i'm trying to understand from a long time. In this thread you mention that your car's vtec has not been working from the time you got ur turbo/ecu! If that is the case, how is the car producing power at such high revvs! If I get the Vtec principle right, the car can no doubt revv but the power should have started to platue from where the vtec lobes are designed to take on!! However, this does not seem to happen in your case. Even if you are using custom grind cam's in that case I am sure you must have gotten cams designed to give you power much lower down the revv's and if not then you are using higher lift lobes which is in a way like using vtec..as this car is your daily drive I believe. Can you please explain! I am really very confused. Also pardon me if there is something that I said which sounds very stupid.. I'm just learning. Cheers, Shrey __________________ Did you just say, VTEC!! Oooo yeaaah!! Last edited by ssjr0498 : 5th May 2008 at 14:55.

6th May 2008, 13:53	#759 (permalink)
balenopower BHPian Join Date: Feb 2005 Location: mumbai Posts: 307 View My Garage	Read the review on motoring.Very impressive. __________________ Pedal to the Metal..... *Awaiting the baby NINJA..*

6th May 2008, 19:53	#761 (permalink)
Psycho Distinguished - BHPian Join Date: Jul 2004 Location: Bangalore Posts: 794 View My Garage	I dunno what value I can add sitting here on the thread. There are a few points that can be brought out based on the info available with me: 1. Would expect a jump when the vtec kicks in but that could be reduced due to many factors like tuning due to higher compression 2. Frankly speaking I cant understand as to how the engine is revving out so far without the vtec functioning, would expect it to die a lot quicker. Unless it is being pushed till the turbo builds enough boost to continue revving the engine which I think would be the case. An easy way to identify this would be for jiggy to confirm if the car has been sluggish till about 5000rpm 3. I have been told the VTEC is working now amd can be confirmed with a distinctive change in exhaust note and a surge 4. Would like to see an updated dyno sheet before i comment again __________________ [FONT=Arial]I'm busy, and I stay busy, but I want to remain in control of things where I can stay in the city and go home at night to my kids.[/FONT]

6th May 2008, 20:21	#762 (permalink)
viper Senior - BHPian Join Date: Mar 2005 Location: Back in Mumbai Posts: 1,986 View My Garage	Hi Guys, Let me try and explain the problem in simple english. Prior to Turbo Charging the car there was a distinct and loud change in the exhaust note coupled with a boost in power at around 5200-5300RPM when the Vtec would kick in. After TC'ng the car the change in exhaust note was not there. The car was more sluggish & less torquey then before TC. That is how I came to the conclusion that the Vtec was not working I could be wrong but I very much doubt that as you can read from the below para. Why the Vtec was not working is more of a mystery to me as well. IMO it was mostly a wrong wiring connection by the electrician. on 1st May when Karthik came to Mumbai he sorted out the Vtec issue and that was the first time I heard the Vtec exhaust note change at 5300 RPM. The car feels much peppier now. I will most probably be dynoing the car tomorrow if Karan is free and I hope that the new dynograph can answer the queries raised here. Viper __________________ *NO ONE DARES COME CLOSE* Last edited by viper : 6th May 2008 at 20:31.

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4th May 2008, 11:10	#751 (permalink)
dinar BHPian Join Date: Mar 2006 Location: goa Posts: 398	Just went through the article, it's great, hoping to see the new steering wheel and the seats.

7th May 2008, 03:53	#765 (permalink)
HPP BHPian Join Date: Mar 2008 Location: Minneapolis, MN/Hyderabad Posts: 120	The car shouldn't have any issue making power or revving out with the vtec disengaged. It will just not pick up any power that it would have at the point where the vtec would normally have engaged. In essence it is running on a milder cam and will make power based on that. The new graph should show the same graph until vtec kicks in and from there the hp should rise and possibly the tq may drop(may be off on that one). In any case, for vtec to operate, you need proper levels of oil pressure, and all the wiring to be correct(assuming all mechanical is in order).. fairly simple. Also, now that the vtec is engaging, the air fuel ratios should be leaner in the vtec range of the graph. I'd take it easy until you richen up that part of the map.