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Search: Posts Made By: conv90
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Forum: C4 Tech/Performance
07-30-2018, 11:00 AM
Replies: 6
Views: 1,808
Posted By conv90

Thanks, It's a carbed High compression Sportster....

Thanks, It's a carbed High compression Sportster.
I made this process just 2 weeks ago. Not impressed by the "hard stuff came out" because nothing came out. Pistons and cylinder are new and I was...
Forum: C4 Tech/Performance
07-30-2018, 06:18 AM
Replies: 6
Views: 1,808
Posted By conv90

So do you think that (regardless of the resistor)...

So do you think that (regardless of the resistor) the order should be:
from hotter to colder
FR4
FR5
BKR5E
BKR6E
BKR7E
R5672A-8
R5672A-9
Forum: C4 Tech/Performance
07-27-2018, 09:57 AM
Replies: 6
Views: 1,808
Posted By conv90

NGK heat range

I know that in NGK higher the number colder the plug
but they have so many different code/numbers
14mm 5/8 hex 3/4" reach , resistor or non resistor is the category

I like to try different heat...
Forum: C4 Tech/Performance
07-25-2018, 11:34 AM
Replies: 1
Views: 353
Posted By conv90

Lost right bank on a 91

A friend of mine with a 1991 L98 lost completely the passenger side bank.
It was using the car and a second later the right side stopped to work
Injectors are ok on impedence (all 8)
spark is on 8...
Forum: C4 Tech/Performance
04-19-2016, 11:33 AM
Replies: 35
Views: 4,747
Posted By conv90

My list: C44 Bulkhead Wiring Assembly...

My list:

C44 Bulkhead Wiring Assembly BCWA-C44
http://www.racetronix.biz/itemdesc.asp?ic=BCWA-C44&eq=&Tp=

C44 1990-1996 Fuel Pump Installation Kit (I order because I need new gasket)...
Forum: C4 Tech/Performance
04-19-2016, 07:39 AM
Replies: 35
Views: 4,747
Posted By conv90

Sure I want to fix (not only to patch). Im in...

Sure I want to fix (not only to patch). Im in Italy so I have to think good before to buy.
I preparing a list of things to buy from racetronix. I'll post here the list so I hope Racetronix will...
Forum: C4 Tech/Performance
04-19-2016, 04:40 AM
Replies: 35
Views: 4,747
Posted By conv90

UPDATE: Yesterday night I wanted to check...

UPDATE:
Yesterday night I wanted to check better the Fuel pump relay.
Just for a fast check I wanted to see the fuses on the fuse panel.
All the fuses were changed last week . All were OK (FP one...
Forum: C4 Tech/Performance
04-18-2016, 09:07 AM
Replies: 35
Views: 4,747
Posted By conv90

WV , Thanks. I have a FM but often is useless ....

WV , Thanks. I have a FM but often is useless . It's full of Vin J info (being the first year of the ZR1).
BTW, thanks
but the FUEL PUMP PRIME CONNECTOR (under the hood near the battery...)......
Forum: C4 Tech/Performance
04-18-2016, 04:17 AM
Replies: 35
Views: 4,747
Posted By conv90

Update: I told the mechanic to perform some...

Update:
I told the mechanic to perform some adjustement to allow me to go to a run I had planned to do in the week end.
He removed/cut the internal side black connector and welded directly to the...
Forum: C4 Tech/Performance
04-15-2016, 11:49 AM
Replies: 35
Views: 4,747
Posted By conv90

In the first pic you can see the conditions of...

In the first pic you can see the conditions of wires and the condition of the black in-tank black connector. (and the parallelepiped plastic box)

In the second pic the metallic square clip holding...
Forum: C4 Tech/Performance
04-15-2016, 11:46 AM
Replies: 35
Views: 4,747
Posted By conv90

https://s23.postimg.org/crtx43v0b/IMG_20160409_184...

https://s23.postimg.org/crtx43v0b/IMG_20160409_184723.jpg (https://postimage.org/)
Forum: C4 Tech/Performance
04-15-2016, 11:42 AM
Replies: 35
Views: 4,747
Posted By conv90

https://s24.postimg.org/569fsf4cl/IMG_20160409_184...

https://s24.postimg.org/569fsf4cl/IMG_20160409_184659.jpg (https://postimage.org/)
Forum: C4 Tech/Performance
04-15-2016, 11:32 AM
Replies: 35
Views: 4,747
Posted By conv90

Help---- EDIT. I m looking at racetronix...

Help---- EDIT.

I m looking at racetronix site and I see many wiring harness.
My car is a 1990 BUT the connector is a 3 spade connector NOT 4.

the yellow bulkhead connector is 3 spade. AND the...
Forum: C4 Tech/Performance
04-15-2016, 11:11 AM
Replies: 35
Views: 4,747
Posted By conv90

Yes, yes ... now I remeber. When I installed the...

Yes, yes ... now I remeber. When I installed the racetronix pump (years ago) I 've not used all the parts. I remember I judged the connections on the stock sender unit GOOD.
SO followed years of...
Forum: C4 Tech/Performance
04-15-2016, 08:55 AM
Replies: 35
Views: 4,747
Posted By conv90

I bought about 6-7 years ago WITH the $50...

I bought about 6-7 years ago WITH the $50 harness.
Never had any problem.

The problem I have is that NOT always I hear the fuel pump prime when I turn the key.

I changed the fuel pump relay....
Forum: C4 Tech/Performance
04-12-2016, 11:24 AM
Replies: 35
Views: 4,747
Posted By conv90

...and my pump is a Racetronix.

...and my pump is a Racetronix.
Forum: C4 Tech/Performance
04-09-2016, 12:34 PM
Replies: 35
Views: 4,747
Posted By conv90

I found that the 3 wires have been cut. and the...

I found that the 3 wires have been cut. and the connector removed.
No problem on this. Now I remove the fuel pump to see the condition of the wires UNDER the yellow grommet.
yes when it works I...
Forum: C4 Tech/Performance
04-09-2016, 11:43 AM
Replies: 35
Views: 4,747
Posted By conv90

The fact is that if I wiggle this connector the...

The fact is that if I wiggle this connector the fuel pump works.
If I follow the wires, they enters in a corrugated tube and the 3 pin weather pack is not visible.
Im becoming crazy. The car run...
Forum: C4 Tech/Performance
04-09-2016, 10:53 AM
Replies: 35
Views: 4,747
Posted By conv90

I have intermittent working conditions. WHen I...

I have intermittent working conditions. WHen I wiggle this connector it's works. So I want to diagnose better the connections.
Forum: C4 Tech/Performance
04-09-2016, 10:47 AM
Replies: 35
Views: 4,747
Posted By conv90

How to remove the fuel pump connector?

Im speaking of this connector:
Pic is taken from internet not my actual one:
http://www.corvettemagazine.com/wp-content/uploads/c4-corvette-fuel-pump-sending-unit-replacement_08.jpg

the yellow...
Forum: C4 Tech/Performance
10-07-2015, 09:52 AM
Replies: 4
Views: 447
Posted By conv90

yes! :iagree: and it's simple to do a fast check...

yes! :iagree: and it's simple to do a fast check on it.
thanks!

My catastrophic mind is always thinking to serious damages (like missing piston skirts.. loose connectiong rods... spun...
Forum: C4 Tech/Performance
10-07-2015, 09:38 AM
Replies: 4
Views: 447
Posted By conv90

Don't get me wrong antfarmer2 /thanks!) , but i...

Don't get me wrong antfarmer2 /thanks!) , but i think it has nothing to do with ujoints.
It feel to me like something "unbalanced" and it seems that more load is applied at low rpm s (converter...
Forum: C4 Tech/Performance
10-07-2015, 09:26 AM
Replies: 2
Views: 1,255
Posted By conv90

It's a Zeitronix unit. I installed about 4-5...

It's a Zeitronix unit. I installed about 4-5 years ago or more (with the correct heated O2). Never had a problem with it. Even 2 months ago it was running Ok showing the right AFR values. I'm running...
Forum: C4 Tech/Performance
10-07-2015, 09:07 AM
Replies: 4
Views: 447
Posted By conv90

Strange vibration on my 90

After a 2 full months non using the car and after some problem to start it (there is a thread on it), I experienced some vibrations.
I explain: Usually when I use my car after a period of rest I...
Forum: C4 Tech/Performance
10-07-2015, 08:53 AM
Replies: 2
Views: 1,255
Posted By conv90

Fuel pump, hard start and AFR lean

I posted the same in an old thread (not mine) but probably it's deserve an own thread:
" After a 2 fulll months non using the car, I tried to start the car.
Turned the key and I have not heard the...
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