Well, that’s correct in theory, boost is a measure of back pressure, so the more efficient the engine is the less boost an engine would see.

However, in his instance we aren’t modifying the heads and engine to increase efficiency. And in my honest opinion one would struggle to make 800HP with a 1.9 at 9:5 static compression. You will never build enough cylinder pressure to achieve those numbers.

Built numerous LSA engines with 1.9’s and made 800HP plus but yes needed engine modifications, cam, valve springs and more. Plus they are a 6.2 ltr engine to start with.

So, a 5.0 ltr engine with a 1.9 spinning within its limits and not over running it either would be a stretch.

But I could be wrong as I haven’t built a AJ133 S/C engine yet to see their full potential. Plenty of LSA engines with 1.9 on the other hand 😊

 

Hey man nice to see some from the ls world here same here I used to Owen a 2010 cts v pretty well modified. Been playing around with this jaguar platform for years now and let me tell you it surprised me compared to my cts v. 800hp is a peice of cake my car is almost at that power level based of my 1/4 mile times,weight. The car made 605whp last year and it did 11.5at 122mph now my pb is a 10.56@133 now I. Guessing 680-700rwhp that's about 800crank car weights 4288with me in it. And this was all done with a completely stock blower and a 2.37 upper on pump gas only had muffler delete and res delete at almost 17psi of boost did some exhaust work went from almost 17psi down to 13.3psi Temps dropped significantly so I upgraded to a 55mm upper went up to almost 15psi next I did a full supercharger port boost dropped back down to 13.5 now I'm ready to upgrade the crank pulley and bring it back up to 16-17 to the efficiency range of the blower. To me it seems like the head stock flows really good just gotta help it by opening up the exhaust which that's the first thing you will need to do on every single engine when it comes to power. In my experience even if you have a big supercharger and don't do nothing about back pressure you will always end up with high intake Temps and pushing the motor with high amounts of boost I remember when I built my bmw n54 engine blew up 3 motors all had broken ringlands couldn't figure out why buddy of mine knew exactly the issue to much back pressure got the head ported and that alone made a huge difference was able to go from 570 up to 660+whp twin turbo setup. Funniest thing I've read in this forum was if you remove your muffler or resonator you will lose power😂😂 that's probably why this platform has been stuck in the high 650hp for over 10 years now.

 

Got a soft spot for LS engines. Been building them for years with the help of a friend who knows LS heads very well, guy I am sure you would know, Tony Mamo from Mamo motorsports!

Just completed one last week, 427 dart block, magnuson drag TVS 2650. Made 1320HP and 1115 FT of torque.

Firstly, congratulations on your ¼ mile time, that is a great result to say the least. And yes, you must be close to 800HP with those times and weight car.

I am trying to break the 10sec before installing the charger etc. PB is 11.2 at 125mile. I am only new to tuning these cars, not as easy as the LS world using HP tuners. Mods I have done so far are upper and lower pulleys, 2.5-inch exhaust with 100 cell cats, still retaining the rear stock muffler. Well, based on others luckily, I left the muffler and resonators on as I would have lost power…. LOL how ridiculous.

You are spot on man, any forced induction still relies to some extent the piston to evacuate the gasses. So, it’s all about the exhaust being efficient. When you mentioned exhaust work, did your port the heads or worked on the exhaust manifolds and down?

Nice to see someone who loves these cars/engines and has actually achieved allot with them.

BTW Do you do your own tuning or have you got someone?

 

Just received an email that VAP is ready to release their TVS2300 package for the AJ133. I’m sure Stuart will announce it here shortly.

 

Here's a video.

 

Just ordered mine

 

Anyone else joining me with the 2300
vap have developed and thoroughly tested their set up and I estimate their figure is very much on the safe side
this is a huge leap
i I know a few people have been getting 700 but they must be struggling with intake and egt
with Vap set up you know they have covered every angle in the development and probably achieved this figure without dialing in any more timing(I don’t know this for a fact just my own opinion )
previously I ran water meth as a failsafe but now plan to get the vap intake and inject pre throttle body

if i ever manage to rob another bank or get back into dealing cocaine I may well go forged pistons and rods

 

Watching with much envy!!
I am sure you will post when you get it installed?
.
.
.

 

Hi @Stuart@VelocityAP ,
​I’m quite confused. I watched the video and had already read your post beforehand. My plan was to run the Harrop 2300 with an 80mm pulley on stock software, replacing my OEM TVS 1900.
​However, I heard from one of your employees today that the supercharger is delivered with a 65mm pulley and that you advise against installing an 80mm pulley for JLR applications. This seems to contradict the statements made in the video.
​Could you please clear this up for me?
​Thanks,

 

I would strongly you go with the setup they recommend. I was finally able to drive may car yesterday for the first time since after having the TVS2300, lower pulley, updated tensioner. Pierberg supercharger pump, carbon fiber intake, fuel pump booster & software installed. The only thing I didn't install was the water methanol injection. The car is a monster! They know what they are saying with their recommendations. You will not regret it at all. If you want the full potential follow there advise.

 

You can install a Harrop 2300 with an 80mm upper pulley. I don't know if you can run it on stock software because we have never tried that, but I trust Harrop's R&D process when they ran it on stock software without any error codes. We only stock them with 65mm pulleys so we would need to order you an 80mm.

I wouldn't say we 'advise against it' per se, but you'll spend $4000 + maybe another $2000 installation to replace the supercharger with one that won't make any more power than the 1900 isn't necessarily something we would advise anyone to do.

 

Please elaborate on “monster!” - we’ve all been waiting.

 

As I posted above I have only had one chance to drive the car since getting it back. The only way to describe the difference is WOW. It pulls you back in the seat like a modified GTR. It doesn't accelerate it launches forward like a beast. In normal driving it is as if it is stock, step on the throttle & all hell breaks out. I was on the highway cruising @ 60 mph & accelerated hard before I knew it I was well into triple digits. I had considered going the ported blower route again, but after speaking with Stuart it made more sense to go this route. For anyone looking to upgrade their car I highly recommend the TVS2300. The installation was performed @ Automasters in Hollis New Hampshire by a Master Jaguar technician that worked for me for many years. They had the car as a winter project as I was in no hurry. For anyone wondering about performance data you are going to have to wait for Stuart to get to his test area. I have been modifying Jaguars sine the 70's from converting the old XJS V-12 to manual transmissions to a Kenne Bell Twin screw super charger on my XKR. This kit is by far the most impressive update I have ever seen. The quality as well as fit & finish of every part is amazing. It appears they really did their homework. Stuart was so very helpful any time I had a question. He answered all of my questions & was a joy to work with. Thank you very much to Stuart & VAP for such a wonderful package.

 

Mine should be done with the cams, the 2300 and head studs sometime in the next week or two. I cannot wait.

 

I had asked VAP about purchasing this setup without the methanol injection at one point and was told that wasn't a setup they were offering. A deal breaker for me, I didn't want to deal with the methanol. Did they end provide you a unique (less power output) tune/kit to remove the methanol from the equation? Or did you just omit it in your install and are taking the risk?

 

I agree with you on the methanol injection. We installed it on my last car & I didn't want to deal with it again. I spoke with Stuart @ the beginning & expressed not wanting the methanol injection. He said it would not be an issue, as I explained the car will never be tracked just spirited street use. I don't remember him saying anything about reduced power output. Stuart if you see this post please elaborate on our conversation. Stohlen I strongly recommend the kit. It is truly worth the money!

 

The kit is designed to reduce the AIT so we can tune the maximum amount of power from this unit.

 

What’s the latest info re the full set up and the cams as it broke the driveshaft when tested

 

That was on the F-Pace SVR. Currently we do not have any reason to believe this is an issue with the F-Type as well based on the torture test we did with our test car when developing the kit. We have another F-Type with the full cams set getting ready to be finished that will be put through the paces once again, so we can report back more data once we have it.

 

Just to be clear - we do not advise running our kit without water/methanol injection at this time. People can choose to do what they want with their own vehicle. The issue is that any prolonged WOT is going to create too much heat, borderline knock conditions and because we won't/don't remove inbuilt factory protections it's going to pull timing and/or open the bypass valve and result in a hard cut in power. By prolonged WOT I mean anything more than a few seconds.