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Injectors for Mild Stroker?

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Netpackrat
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Injectors for Mild Stroker?

Post by Netpackrat » December 30th, 2019, 1:58 am

Put my engine together last winter and am finally getting around to putting it in my Jeep this winter. Jeep is an 01 TJ 4.0 with manual transmission.

Stroker is built on an '02 block with TUPY head, Clegg stroker kit with 8.8 pistons and SCAT forged rods, ARP main and head studs). No other performance mods; my goal is to combine a mild performance increase (for less downshifting going up and down mountains to and from my cabin) with maximum reliability and still running 87 gas if possible. And play nice with the factory engine management. My guess is I will probably be OK with OEM spec injectors (will be replacing the originals with new), but thought I would ask here for a second opinion.

No other performance mods means exactly that... I used a new OEM Mopar camshaft, new OEM grade valves and valve train components (mainly Melling), the only head mod was hardened exhaust seat inserts, and I am going to be reusing the factory intake and exhaust manifolds.

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Cheromaniac
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Re: Injectors for Mild Stroker?

Post by Cheromaniac » December 30th, 2019, 2:08 am

Your stock injectors might still be OK for the job, but you could opt for a mild upgrade to the Bosch 0280155703.
1992 XJ 4.6 Stroker - 5MT - Sold :cry: Stroker build-up, Stroker "recipes"
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Netpackrat
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Re: Injectors for Mild Stroker?

Post by Netpackrat » January 7th, 2020, 2:56 pm

Cheromaniac wrote:
December 30th, 2019, 2:08 am
Your stock injectors might still be OK for the job, but you could opt for a mild upgrade to the Bosch 0280155703.
Will these fit an '01? Everything I am seeing has them recommended for up to '98 only.

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Re: Injectors for Mild Stroker?

Post by Cheromaniac » January 8th, 2020, 1:07 am

They're EV6 injectors so they should be a direct fit.

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Re: Injectors for Mild Stroker?

Post by Netpackrat » March 17th, 2020, 9:59 pm

Revisiting this since I am getting close to needing my injectors. The following site indicates that the 703s are EV1 injectors, which seems to jibe with the year ranges of the original applications I am seeing listed as I shop for them:

https://thexjguys.wordpress.com/2012/12 ... ctor-swap/

Apparently I need the 0280155784 injectors.

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Re: Injectors for Mild Stroker?

Post by Cheromaniac » March 17th, 2020, 11:28 pm

The 784s will be too big for your mild stroker. Go with the ones I recommended earlier.

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Re: Injectors for Mild Stroker?

Post by Netpackrat » March 18th, 2020, 1:32 pm

Cheromaniac wrote:
March 17th, 2020, 11:28 pm
The 784s will be too big for your mild stroker. Go with the ones I recommended earlier.
https://www.injectorrx.com/fuel-injecto ... injectors/

I found this site which seems to confirm that, but everything I am seeing says the 703s are an EV1 injector. If the data at the link is correct, the 789 is the closest match for the 703 in an EV6 injector. The 784s appear to be close to what Clegg is selling as a "24lb" injector which I was already pretty sure was too big.

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