Do i need this resistor on my coil?

8

87efi

New Member

Posts

3

• May 18, 2023

• #1

hello out there.
Today my ordered topran 300065 ignition coil arrived. (ordered by comparison number)
But there's a big resistor(1.6ohms) added to the package and I'm not sure if I need to have this one mounted on the coil Vehicle that It was ordered for is a 87efi flapper thats original coil has no such resistor. Can someone give me some advice please?
Thanks in advance.

 

Turboman

Mab An Gov

Posts

60,151

Location

Lathrowda, Kernow

• May 18, 2023

• #2

87efi said:

hello out there.
Today my ordered topran 300065 ignition coil arrived. (ordered by comparison number)
But there's a big resistor(1.6ohms) added to the package and I'm not sure if I need to have this one mounted on the coil Vehicle that It was ordered for is a 87efi flapper thats original coil has no such resistor. Can someone give me some advice please?
Thanks in advance.

Click to expand...

Welcome to LZ,

What is an "87efi flapper" ?

 

8

87efi

New Member

Posts

3

• May 18, 2023

• #3

3.5efi v8 y.o.m.1987 -RRC.

 

R

Ratae

Well-Known Member

Posts

3,266

• May 19, 2023

• #4

It's got the 'flapper' type airflow meter which uses a flap to measure airflow as opposed to the later 'hotwire' airflow meter which uses a heated wire.

I have no idea about the resistor.

 

Turboman

Mab An Gov

Posts

60,151

Location

Lathrowda, Kernow

• May 19, 2023

• #5

Ratae said:

It's got the 'flapper' type airflow meter which uses a flap to measure airflow as opposed to the later 'hotwire' airflow meter which uses a heated wire.

I have no idea about the resistor.

Click to expand...

Me neither. Resistors with a coil are something I only meet on really old Series that have an 8v coil. No idea why an 87 V8 would need one.

 

R

Ratae

Well-Known Member

Posts

3,266

• May 19, 2023

• #6

I've heard of something called a 'ballast resistor'.
This might (or might not!) help to make a bit more sense of it but it sounds like the electronic distributors don't use it anyway.
www.landyzone.co.uk/land-rover/ballast-resistor-required.176329/

 

8

87efi

New Member

Posts

3

• May 24, 2023

• #7

OK.thanks.did a lot of reading..and it's like turboman mentioned- an 87efi needs no ballasted coil. After some measurements following the Haynes book..etc..I ordered a new ngk 48339 coil that's made for operating at 12v.
Thanks a lot guys