TPI question
Thread Starter
Instructor
Joined: Nov 1999
Posts: 155
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From: Eureka NV
TPI question
Ok you TPI guys!!
You finally convinced me!! I'm going to convert my 84 AND my 79 to tuned port using the MegaSquirt II ECU!! I just got my first TPI (from an 85) today and noted 2 sensors in the front of the manifold. One obviously is the water temp sensor. The other goes into the #2 intake port. I do know that the MAT is under the plenum. SO what the *%%^* is the other one in the front of the manifold?
Ken
You finally convinced me!! I'm going to convert my 84 AND my 79 to tuned port using the MegaSquirt II ECU!! I just got my first TPI (from an 85) today and noted 2 sensors in the front of the manifold. One obviously is the water temp sensor. The other goes into the #2 intake port. I do know that the MAT is under the plenum. SO what the *%%^* is the other one in the front of the manifold?
Ken
Pro
Joined: Nov 2002
Posts: 737
Likes: 11
From: Charlotte MI
Originally Posted by KJones
Ok you TPI guys!!
You finally convinced me!! I'm going to convert my 84 AND my 79 to tuned port using the MegaSquirt II ECU!! I just got my first TPI (from an 85) today and noted 2 sensors in the front of the manifold. One obviously is the water temp sensor. The other goes into the #2 intake port. I do know that the MAT is under the plenum. SO what the *%%^* is the other one in the front of the manifold?
Ken
You finally convinced me!! I'm going to convert my 84 AND my 79 to tuned port using the MegaSquirt II ECU!! I just got my first TPI (from an 85) today and noted 2 sensors in the front of the manifold. One obviously is the water temp sensor. The other goes into the #2 intake port. I do know that the MAT is under the plenum. SO what the *%%^* is the other one in the front of the manifold?
Ken
Bruce
Thread Starter
Instructor
Joined: Nov 1999
Posts: 155
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From: Eureka NV
WELL DUH!!!! I went back out to my shop and stuck my finger up the hole again.... WRONG hole!!! the sensor is in the water jacket NOT the intake port!!! Gawd I hate getting old!!
Sorry for the false start guys!!!! But you know how us Crossfire guys are.... lol
That exploded view is just what I need.
If you don't mind just email it to me at kjones at eurekanv.org
Thanks much!!!
Ken
Sorry for the false start guys!!!! But you know how us Crossfire guys are.... lol
That exploded view is just what I need.
If you don't mind just email it to me at kjones at eurekanv.org
Thanks much!!!
Ken
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by KJones
Ok you TPI guys!!
You finally convinced me!! I'm going to convert my 84 AND my 79 to tuned port using the MegaSquirt II ECU!!
You finally convinced me!! I'm going to convert my 84 AND my 79 to tuned port using the MegaSquirt II ECU!!
RACE ON!!!
Le Mans Master
Joined: Aug 2003
Posts: 9,884
Likes: 3
From: Magnolia Mississippi
St. Jude '03-'04-'05-'06-'07
Originally Posted by KJones
Damn!!
That's what I get for asking the question I guess......
I'll get my a$$ off here and not bother anymore.
My sincere apologies to all.
Ken
That's what I get for asking the question I guess......
I'll get my a$$ off here and not bother anymore.
My sincere apologies to all.
Ken
No problems asking questions, just weed out the correct information and forget about the rest...
Thread Starter
Instructor
Joined: Nov 1999
Posts: 155
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From: Eureka NV
Thanks Vinnie. I appreciate your encouragement!!
On the other hand, perhaps I don't belong here. My numbers don't match, I can't run in the 11's and I can't post a huge list of 'mods'. hahahahaha
I'm just an old guy who enjoys tinkering and driving his Corvettes. (my first one was a 58 and I've been hooked ever since)
Vinnie is right! I will tuck in my horns, take a seat and enjoy the company of others who are not so critical. I have enjoyed the forum since 1999 and the guys I have met here who are willing to share their experience and knowledge!
Regards to all,
Ken
On the other hand, perhaps I don't belong here. My numbers don't match, I can't run in the 11's and I can't post a huge list of 'mods'. hahahahaha
I'm just an old guy who enjoys tinkering and driving his Corvettes. (my first one was a 58 and I've been hooked ever since)
Vinnie is right! I will tuck in my horns, take a seat and enjoy the company of others who are not so critical. I have enjoyed the forum since 1999 and the guys I have met here who are willing to share their experience and knowledge!
Regards to all,
Ken
Last edited by KJones; Jul 26, 2006 at 05:11 PM.
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Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by KJones
Damn!!
That's what I get for asking the question I guess......
I'll get my a$$ off here and not bother anymore.
My sincere apologies to all.
Ken
That's what I get for asking the question I guess......
I'll get my a$$ off here and not bother anymore.
My sincere apologies to all.
Ken
Originally Posted by KJones
Ok you TPI guys!!
You finally convinced me!! I'm going to convert my 84 AND my 79 to tuned port using the MegaSquirt II ECU!!
You finally convinced me!! I'm going to convert my 84 AND my 79 to tuned port using the MegaSquirt II ECU!!
In fact the stock TPI will provide little to no performance gain over the '84 Crossfire or '79 carb. Technologically, the TPI is a minor up grade over the Crossfire and a leap ahead of the carb and the analog controls for the operation of the L48 or L82 engine in the '79. Most of the cars on here won't run in the 11s, and there are probably more cars that have nothing more than some of the "free mods" than those that display a list. I'm sorry if I upset you, but there is no need to be so thin skinned. Enjoy working on your cars.
RACE ON!!!
Racer
Joined: Jan 2004
Posts: 291
Likes: 0
From: Norton ma
Kjones, first you have to take others comments with a thick skin.
Second, I have done what you are planning already.
I bought a 84 crossfire car and converted it to Megasquirt, the improvement is 10000% better. I am not using TPI however, instead I am running aluminum fastburn heads with a marine dual plane and port injection, 1000cfm throttle body to top it off.
The crossfire ran great, but its just too old of a tech to deal with a modded car. The MS give you closed loop wideband control, and great tunability.
I have done half a dozen megasquirt cars, it is an incredible engine managment system that is cheap, it will catch on someday soon.
If you need any help at all let me know! Good luck!
Second, I have done what you are planning already.
I bought a 84 crossfire car and converted it to Megasquirt, the improvement is 10000% better. I am not using TPI however, instead I am running aluminum fastburn heads with a marine dual plane and port injection, 1000cfm throttle body to top it off.
The crossfire ran great, but its just too old of a tech to deal with a modded car. The MS give you closed loop wideband control, and great tunability.
I have done half a dozen megasquirt cars, it is an incredible engine managment system that is cheap, it will catch on someday soon.
If you need any help at all let me know! Good luck!
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by 350ws6
The crossfire ran great, but its just too old of a tech to deal with a modded car. The MS give you closed loop wideband control, and great tunability.
Originally Posted by Steel Breeze
Now I am jumping out on a limb here, but does the TPI have more torque than the CFI??? "I have no idea"
RACE ON!!!
Le Mans Master
Joined: Jun 2006
Posts: 5,642
Likes: 5
From: One day you're a Comet...the next day you're dust... Arkansas
Here are a few numbers from Chilton (They took them from GM published data). I am skipping years until the data changes. Obviously the data is stated at varying RPM's but gives some idea.
Year HP TQ
1984 165@5200 210@2000
1987 230@4000 330@3200
1988 245@4300 340@3200
1992 300@5000 330@4000
1996
That covers the standard engines for the C4 year range.
Year HP TQ
1984 165@5200 210@2000
1987 230@4000 330@3200
1988 245@4300 340@3200
1992 300@5000 330@4000
1996
That covers the standard engines for the C4 year range.
Last edited by BADDUCK; Aug 11, 2006 at 07:56 PM.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by BADDUCK
Here are a few numbers from Chilton (They took them from GM published data).
Year HP TQ
1984 165@5200 210@2000
1987 230@4000 330@3200
1988 245@4300 340@3200
Year HP TQ
1984 165@5200 210@2000
1987 230@4000 330@3200
1988 245@4300 340@3200
Year HP TQ
1984 205@4300 290@2800
How the hell would you get a stock (other than mine) Crossfire to 5200 rpms, for a maximum output of anything, except maybe laughs?
RACE ON!!!