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4.5L petrol GU intercooled turbo upgrade

23197 Views 64 Replies 20 Participants Last post by  JONO_GQ
Hi everyone, I am new to the forum and have been sniffing around the great wealth of information here. Very impressed.

I have just recently purchased my first Patrol, a 1999 GU 4.5l petrol Ti. I purchased the car to tow my R35 track car in my sig to and from the tracks around SEQ 15 times a year from my home in Brisbane and the odd interstate trip to Bathurst/Eastern Creek etc once a year.

I like power and torque and plenty of it! I certainly do not want to be left twiddling my thumbs whilst lugging the gib lump around. Consequently I am considering a custom inter-cooled turbo upgrade and dual fuel lpg conversion starting next week. The guys from Mercury Motorsport who look after my R35 are awesome. they just happen to have a great in house fabricator who is a patrol nut, and mechanics with loads of custom turbo install experience.

If you're interested, check out my r35 build thread in the link below: (btw, hi to any SAU forum members lurking here)

R35 Build - Skylines Australia

Anyway, I would appreciate everyones thoughts on the following:

  1. Turbo choice
  2. ECU choice, tuning ability for petrol & lpg and cost
  3. Need for upgrading the engine internals or not (when the job is done right, car is well maintained and sensible boost applied)
  4. Costs of the inter-cooled turbo upgrade by those who have been there before and whether they were happy or not with the outcome
  5. lpg conversion considerations, especially regarding turbo mod, and who to see in Brisbane.

Thanks for reading,

61 - 65 of 65 Posts
Lol yes, but I think we could go to 10 or 12 psi. Get my new Nevco trailer this week and towing out to QR Wednesday the following week so will see how it goes. This trailer is something else that's for sure!
Haven't been back here for a while, thought I'd post an update. Car drives like a dream. Power delivery smooth and plenty low down torque.
Towed the R35 out to lakeside on my Nevco trailer on Wednesday 20th. Load was around 2800kg. No problem!

BTW managed a 56.4 at lakeside on old slicks. Back to lakeside next Thursday for the Paul Ruzic time attack day but I think the tyres on their 4th track day will have had it by then.
how is it, still going good????
how often do you get out to lakeside
Just posting in addition to bookmarking this thread, that looks amazing mate. I can't exactly send car to SA, you know any QLD mobs worth talking to?.. OR just talk to the SA blokes I could install a fair bit of it myself.

Again, nice ride.
did i read correctly when you said it only had 14000 on the clock when you first got the car? :eek: awesome. talking of awesome that R35 is awesome.:victory:
61 - 65 of 65 Posts
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