The 13B NA Power Thread. - Page 5

NoDOHC · 06-29-2009, 11:54 PM

How did this ever turn out for power?

Whizbang · 09-20-2009, 10:41 PM

anyone have current updates?

also i would like to have altitude added in. My testing will be at around 4000 ft which will show less than anyone at sea level.

just need a wideband

NoDOHC · 09-23-2009, 11:46 PM

Only Updates I have are as follows:

216 WHp = 63% Duty cycle on 4 - 460 cc/min injectors on Peak and hold (14.16 V from alternator) giving 13.3:1 AFR. This comes from my Haltech data logging while I was on the dyno making 216 WHp. This is very comparable to online calculators.

I still think that 200 WHp is attainable for you, you have a better intake setup than I do (although mine had been heavily modified from stock). This should offset the altitude difference (I am at 800 ft).

Whizbang · 09-24-2009, 06:43 PM

i really need to build an engine for the car. The original 200,000 mile 6 port engine will die sometime.

Tanj! · 09-25-2009, 10:49 AM

Quote:

Originally Posted by Gravity Fed

i really need to build an engine for the car. The original 200,000 mile 6 port engine will die sometime.

It might last longer than you expect. Mine is up to 245k now and still running strong.

Whizbang · 09-25-2009, 05:04 PM

knowing my luck that is true, but it wouldnt hurt to get something in the works.

Whizbang · 11-01-2009, 06:59 PM

only 19 days til idaho. I am going to take on some changes once i get to working on the car again. Primarily going to CAS and having ignition control. Additionally, i am going to get a wideband so i can properly tune the car. otherwise its just guess work.

NoDOHC · 11-01-2009, 08:03 PM

What kind of port work did you do?

How are you actuating your 6PI?

That manifold that you used has to flow better than the stock 6-port manifold, maybe you can get 200 WHp. I am really convinced that the biggest problem with 6-port blocks is the late intake port close and the second biggest problem is the intake manifold.

PercentSevenC · 11-02-2009, 01:24 AM

The third problem is the tiny primary ports. If you use GSL-SE end plates you can use a Y or nitrided R5 intermediate plate, but then you have to use pre-'86 rotor housings.

Whizbang · 11-02-2009, 09:23 PM

my current engine is 100 percent original s4 6 port. I need to build something more suitable.

NoDOHC · 11-03-2009, 12:04 AM

You have an aftermarket intake manifold though, right? That has to help your power, there is not much worse design than the factory s4 intake for power.

Whizbang · 11-03-2009, 07:10 PM

yea its aftermarket

NoDOHC · 11-09-2009, 08:16 PM

Ok, maybe I am missing something, but what makes the P-port expensive?

All you need is a set of housings, some aluminum-ceramic or Devcon and a hole-saw.

Then you can fill your side ports with iron-ceramic or Devcon and you have a P-Port.

I doubt that you would need a 2-piece Eccentric shaft, etc. for a 250 WHp build.

Whizbang · 11-09-2009, 10:24 PM

eh, i guess homebrew wouldnt be soo bad to try. hmm now my gears are turning. i wonder what the limit of my ITBs would be.

Whizbang · 11-11-2009, 12:40 AM

im thinking about buying a drill press from the local industrial surplus place, and aside from other things, that should be able to handle some p-port drilling so i might say hell with it and experiment.

06-29-2009, 11:54 PM	#61
NoDOHC The quest for more torque Join Date: Sep 2008 Location: Sheboygan, Wisconsin Posts: 855 Rep Power: 18	How did this ever turn out for power? __________________ 1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers) 1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic)

09-20-2009, 10:41 PM	#62
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp Posts: 3,190 Rep Power: 21	anyone have current updates? also i would like to have altitude added in. My testing will be at around 4000 ft which will show less than anyone at sea level. just need a wideband __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

09-23-2009, 11:46 PM	#63
NoDOHC The quest for more torque Join Date: Sep 2008 Location: Sheboygan, Wisconsin Posts: 855 Rep Power: 18	Only Updates I have are as follows: 216 WHp = 63% Duty cycle on 4 - 460 cc/min injectors on Peak and hold (14.16 V from alternator) giving 13.3:1 AFR. This comes from my Haltech data logging while I was on the dyno making 216 WHp. This is very comparable to online calculators. I still think that 200 WHp is attainable for you, you have a better intake setup than I do (although mine had been heavily modified from stock). This should offset the altitude difference (I am at 800 ft). __________________ 1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers) 1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic)

09-24-2009, 06:43 PM	#64
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp Posts: 3,190 Rep Power: 21	i really need to build an engine for the car. The original 200,000 mile 6 port engine will die sometime. __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

09-25-2009, 05:04 PM	#66
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp Posts: 3,190 Rep Power: 21	knowing my luck that is true, but it wouldnt hurt to get something in the works. __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

11-01-2009, 06:59 PM	#67
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp Posts: 3,190 Rep Power: 21	only 19 days til idaho. I am going to take on some changes once i get to working on the car again. Primarily going to CAS and having ignition control. Additionally, i am going to get a wideband so i can properly tune the car. otherwise its just guess work. __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

11-01-2009, 08:03 PM	#68
NoDOHC The quest for more torque Join Date: Sep 2008 Location: Sheboygan, Wisconsin Posts: 855 Rep Power: 18	What kind of port work did you do? How are you actuating your 6PI? That manifold that you used has to flow better than the stock 6-port manifold, maybe you can get 200 WHp. I am really convinced that the biggest problem with 6-port blocks is the late intake port close and the second biggest problem is the intake manifold. __________________ 1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers) 1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic)

11-02-2009, 09:23 PM	#70
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp Posts: 3,190 Rep Power: 21	my current engine is 100 percent original s4 6 port. I need to build something more suitable. __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

11-03-2009, 12:04 AM	#71
NoDOHC The quest for more torque Join Date: Sep 2008 Location: Sheboygan, Wisconsin Posts: 855 Rep Power: 18	You have an aftermarket intake manifold though, right? That has to help your power, there is not much worse design than the factory s4 intake for power. __________________ 1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers) 1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic)

11-03-2009, 07:10 PM	#72
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp Posts: 3,190 Rep Power: 21	yea its aftermarket __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

11-09-2009, 08:16 PM	#73
NoDOHC The quest for more torque Join Date: Sep 2008 Location: Sheboygan, Wisconsin Posts: 855 Rep Power: 18	Ok, maybe I am missing something, but what makes the P-port expensive? All you need is a set of housings, some aluminum-ceramic or Devcon and a hole-saw. Then you can fill your side ports with iron-ceramic or Devcon and you have a P-Port. I doubt that you would need a 2-piece Eccentric shaft, etc. for a 250 WHp build. __________________ 1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers) 1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic)

11-09-2009, 10:24 PM	#74
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp Posts: 3,190 Rep Power: 21	eh, i guess homebrew wouldnt be soo bad to try. hmm now my gears are turning. i wonder what the limit of my ITBs would be. __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

11-11-2009, 12:40 AM	#75
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp Posts: 3,190 Rep Power: 21	im thinking about buying a drill press from the local industrial surplus place, and aside from other things, that should be able to handle some p-port drilling so i might say hell with it and experiment. __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook