Jeep SRT8 - Finally Got One Of My Fave Cars Ever -

Love ittt, whats the fuel economy like mate?

Didnt fancy a monaro or whatever the 4x4 version is?
Currently showing 14.9mpg lol since I've owned it lol Nope, just wanted a JEEP, owned one previously the 6 cylinder 4.0... and always wanted the daddy...

Do you plan on keeping the chrome bonnet protector?
For now yeah until I replace the bonnet with something from the states... just stops damage to the paintwork. Might take off for the summer though.
 
Fitted a BWoody CAI from the states... and it is awesome!!! Will get some piccies in the daylight now it's fully in but didn't have time. So, specs on this are (and by all accounts from our stateside friends these are accurate!)...

Flowbench results:
Results as follows:
OEM intake w/oem filter = 799.5 cfm
OEM intake w/K&N drop in = 815.7 cfm
4" BWoody CAI = 1147.6 cfm
Flowbench results showed a whopping 348.1 cfm increase over the OEM air box!!
(Largest gains will be achieved with the 90mm throttle body.)

Dyno results:
Our intake was tested against the OEM intake and gained a whopping 18.7 WHP!

5fUPKHZ.jpg

qHk1O9u.jpg
 
Sorry but I'm getting triggered at the different sizes:p. On a tangent I don't think I've ever used cup holders for a drink in the 18 years I've been driving (apart from when taking my clean travel mug into work:D). The SRT one looks like it could be tricky to twist if it went in cockeyed.
|hahaha, yeah it wasn't until I'd ordered I realised they were slightly different. It's good actually as it caters for different cup sizes and I do use them BUT yeah from an OCD and symetry point of view... it does make me twitch as well lol.

Fair play.. their is no replacement for displacement..

I'm a big kid and would love a V8 just for the sound..
Yep, I've owned 4 cyinlder injection and carbs, 2.0ltr V6, 2.3ltr V6 super charged, 2.8ltr V6, Rotary Wankel, 4.0ltr Straight Six and weirdly in 25 years of driving never owned a V8 until now and it's amazing. It's just got so much soul when driving, the HEMI is one of lifes great motors... I've fallen in love with this thing!!!
 
Currently getting a custom tune from the States and the first iteration is now installed and wow, the throttle response is so much better and it seems to pull better, so much so, I did a cheeky run coming back from the dump this morning just to see... and posted this :-) Got to be happy with this when moving 2.2 tones of steel :-)

Fastest 0-60 time I've done and I reckon I can with some more tweaking hit 4.4s with the perfect launch and some more honing on the tune. This thing pulls!!!

upY2pdr.jpg
 
It's awesome, love this thread!
Cheers man appreciated, looks better in the flesh as well lol. I get some people just don't like them and they're an aquired taste, but just being in something so big and yet goes like stink, it really does put a smile on my face. I do like to be different hahaha

That’s gonna surprise a lot of people at the traffic lights! :D

Great stuff!
Yeah it does, it even shocks me and I've owned this a fair few weeks now, but from the lights yeah, it just goes boom. God knows how those TrackHawks feel with their 700bhp... I'll be happy with 600bhp with this one so that's my target as I want 100% reliability not worrying about pushing too far!
 
Last edited:
Pug.
I really do envy you -I have been a big block V8 man since I was 16 but never been able to get anywhere near buying one.

A few months after we got married I took her to Santa Pod - Now this was in about 1973/4 and it was weekend the American dragsters came over -We saw Don Garllits -Paula Murphy -E J Potter on his V8 Bike and loads more US dragsters.
I remember us standing on the edge of the access road and when they came down to the track these big V8 were rumbling past and your whole chest vibrated - Wife was also hooked on V8 after that. The UK dragsters were powered by turbo charged ford 4 cylinder engines or Jag straight sixes. - It was like another world.

A work mate was also a drag racer - He had a Red Ford Consul 375 and Had a big block in it - He and his wife went for holiday in US and when they finished he threw everything away and bought two large suitcases from Walmart - He had ordered conrods-pistons-cam-followers and heads- valves etc and packed them up - after paying import duty and Vat he had saved well over £1k this is also going back 20+yrs.

Doesn't time fly.
Yeah have to admit, as sad as it is, always wanted a V8 myself and this is my first. BUT, it was only going to be one of two V8s, either the TVR Cerbera V8 or the HEMI and this HEMI just sounds soooooo american... no one does a V8 like the yanks for me. Well happy, so as long as this SRT proves reliable which ultimatley is what we all want... he will get the love hahaha.

So now on my 2nd tune and running in then I'll be data logging again and send off. Running sweet as a nut now and taking advantage of this CAI.
 
So, went the dyno again... and here are the results. Now running; new Iridium Spark Plugs, breathing system cleaned with Catch Can and Oil filler breather, BWoody CAI, running Shell VPower and a custom tune by Yohan and Diablo.

1). Original factory Standard: 305.9bhp@wheels (estimated 420.7bhp) and 557Nm Torque (410lbs)
2). Post mods and Yohan tune: 328.4bhp@wheels (estimated 451.7bhp) and 583Nm Torque (430lbs)

That's a 31bhp and 26Nm/20lbs torque increase over my base figures! Power increases are not amazing, but around what I expected as this is just general maintenance and bolt-on.

The dyno calibration seems to show a really high 31.5% loss to the wheels when running AWD. That seems high BUT it is what it is. Plus it's the only 4WD dyno around here. So, based on the fact that most dyno's are not calibrated the same and I can only go off this 4WD to keep the figures constant.

Whether the figures are correct or not, this is the increase I'm showing, so that's as far as I can go this year. That's giving me a 12.99s 1/4 mile and a 4.52s 0-60mph using Draggy box. All better than the quoted figures so it's a result.

Think on a cold day and hitting it perfect from the lights, I think a 4.4s and a 12.8x will be as quick as this thing can go.

Super Charger next year
1f60e.png
 
Last edited:
Love it. I always have a fondness for the big jeeps. I have owned the tame 4l 6 cylinder version and enjoyed it and would love the SRT....maybe one day,.

But currently looking at sportier cars with the SRT engine in....must be a midlife crisis coming on :D
Hahaha, yeah, I'm kinda just wanting big power and big nicve and comfy but there's nothing better than like the other day, turning up at B&Q, loading the rear then flying off home... then running a 4.5s to 60 hahaha... jack of all trades... maybe a master of none... but what a jack of all trades lol

Love it buddy
Cheers Man
I can just imagine some young 'yoof' in his Fiesta ST pulling up at the lights and thinking 'I'm gonna smoke this guy!' and then it being a ridiculously unfair 'race'.
Yeah, think it does shock a few people from the lights, the way it gets the power down, and it's now running a 1/4 mile in 12.99s... be nice to get into the 12.8's but we shall see.
 
I had two on the Mustang, the one on the intake catches the most, also running them will gain you a couple of horsepower typically as well, good for power and longevity.
Yeah, the air should be cleaner it's as simple as that isn't it mate. Still astounded it caught so much though, and I know we should all be saving the environment etc, however, the catchcan is envrionmentally friendly as long as we dont' dispose of the oil down a drain. I never ever thought it would be that much have to admit. Makes me feel good though knowing this isn't being pumped around the engine all the time.

@Gibbo How's it work on the Ferrari? Similar principal?
 
So, having done the rear brakes the other week (new discs and pads), I decided to do the fronts today. WOW, couldn't believe the crap inside the calipers, just thick black slime and the crappy PAGIT pads literally fell apart in my hands so... all off, cleaned, calipers cleaned with brake cleaner and alloy cleaner... carefully cleaned the seals and the pistons etc, hub all derusted and protected while I was at it... all back with some nice drilled discs and yellowstuff pads. Made a massive difference and I'm running in... makes me realise that your pads can look like they're only 50% worn BUT mine were broken... god knows how...

BucH2jG.jpg

3iAJdn4.jpg

HI1mu0z.jpg

VOVDcZy.jpg

RkmMoHO.jpg
 
Must have taken you ages to drill them holes and buff it with wire wool:cry:. Not sure what would cause a pad to break, did you fit it or did a garage, I'm wondering if it was broken when it went it or if its twisted during fitment. I wonder if the sheer heat from slowing the car down could cracked a pad, it's not something I've heard of before?
Only had the beast since February so, havent'a clue when they went on. Maybe age or something not sure, but glad I replaced them when I did as that could've been tasty slamming on and trying to haul 2.2 tons to a stop... however no harm done. Spoke to my mechnic and he's seeing more pads do it nowdays than he used to so possibly cheaper quality? Who knows, nice to know that I've now replaced every fluid bar the transmission and all major bits are now to my timelines and I know they're all quality.
 
Each time I come onto this thread to see any updates on the motor, I always find myself going straight to auto trader and having a good look at those for sale. A nice big V8 in a very practical vehicle, sounds like a idea to me. How often do you find yourself going to the cathedral of despair to fill up?
Cheers man appreciated. yeah there's three solid ones for sale at the minute and lovely condition silver one with low miles.
https://www.autotrader.co.uk/car-de...ion=on&aggregatedTrim=SRT8&radius=1501&page=1

https://www.autotrader.co.uk/car-details/202104151415891?make=JEEP&advertising-location=at_cars&onesearchad=New&onesearchad=Nearly New&onesearchad=Used&postcode=ch87qg&model=GRAND CHEROKEE&sort=relevance&include-delivery-option=on&aggregatedTrim=SRT8&radius=1501&page=1

https://www.ebay.co.uk/itm/174757471881?hash=item28b05b6689:g:u5sAAOSwIhJgkaGr

As for fuel, yeah it's not great but then again doing lots of crappy miles since I bought only been on two decently longer runs (when I say longer I mean around 45 mile trips)... but computer is saying 15.2mpg lol... and running on 99octane and thats' £100 to fill the thing so yeah it aint cheap but then again I knew it wouldnt' be. I'm never cheap on my cars, so it's having the love and it's eating the fuel, just like a 6.1ltr should have.

I'd reccomend getting one if you can, but if you can't chuck fuel at it... I'd be wary lol. I reckon if I had a lot more fun than I currently do you'd be looking around 10-12mpg no problem... hahaha, but I do think on a long motortrip on cruise at 80mph, it'd easily do 20mpg... one of those really :) Love the thing though has no right to be this quick lol.



Plus, there will be some amendments to the exhaust on Thursday and cannae wait :cool::cool::cool:

Also, need to get some nice pictures as well, so hopefully if the weather is nice over the next couple of weeks will take him into Snowden area and get some proper piccies... :eek:
 
Last edited:
Back
Top Bottom