I have an opti NIB and I have a set of TR-55s. The question is how long
will an opti swap take and is it easier than a plug change. Note that I have
stock cast iron manifolds.

 

If it were me I would do the opti, its a hell of alot easier than doing plugs on a cast manifold car. Get some headers then do the plugs and wires

 

do it all at once. dont leave any weak links

 

"I can cut your pizza into 6 slices or twelve, which would you like?"

"Um, better make it 6 because I don't think that I could eat twelve."

On a cast manifold car, neither is easy, but it comes down to draining the coolant in my mind. If you absolutly hate doing that for some reason, do the plugs. However, looking at your dyno graph, I would guess that its your opti thats causing the problem.

 

Just do both....It's not that hard....Just time consuming......

 

Plugs are easier and less messy..... I have stock manifolds and it take me around 30-60 minutes to change, if I take my time.... Granted, that the first time took around 2 hours..... Key thing is prepping... Having all the tools you need.. 3/8ths rachet, 3 different lenth extensions, universal joint, and 5/8ths plug socket.... Plus long sleeve shirt....

And I can do it all from the top.....

 

Thanks for all the info. Decided to go the opti route cuz I would rather drain
the coolant then bust kuckles today.

 

well if you get the front of the motor stripped down plugs become easy

 

I'm slower than $hit when it comes to working on the car and the opti
swap took me 6 hours. Good thing I don't do this for a living.

I need to get back to the dyno to verify for sure but the SOTP meter
says the problem is fixed. Did a second gear blast to 6000 and could not
feel the surge like it had before. Tried a couple of first gear blasts but
the tires would spin at 3500, but it felt smooth to 6000.

I really did not want to change the plugs because they only have 2000
miles on them and the wires are new too. I'll let the dyno graph be the
deciding factor. Based on the info I pulled up from searches on this board
the Rapidfire plugs had good feedback so I hope the only issue was the opti.

Thanks again for all the information.

 

i did not know plugs and wires were new they should be fine also if running a stock coil pick up a msd