Grant Brennan Race Team

GTRNZ - AGM, prize giving and gala evening yesterday.
Good to catch up with everyone that could attend and receive my 3rd place trophy for Round 5 and 3rd place for GT1 Overall for the season.
Very happy and looking forward to the coming season with a few upgrades and sights on the #1 trophy.

See what the Aussie V8s are missing out on at Taupo this year
Great to see the car from this view
Great footage John DeVeth

GTRNZ GT1 & GT2 Race 2 Taupo 29th Mar 2026 Good day at Taupo with all the GTRNZ people. Great club to belong to

Write up on GTRNZ FB Page

GT1 Class! 🏆
Battle of the big wings!
Its great to see a revival of the GT1 Class and the big bangers coming out to impress the crowds!
This season saw plenty of excitement and action in GT1. With Cameron Jones Racing Leading the charge of the homebuilt specials against some of the fastest factory race cars in the world.
🥇Nobody could match John De Veth Racing however. John dominated Taking 4 round victories across the season in his Crawford DP. a very well deserved class win for John!!
🥈Im sure John will remind Glenn at every chance he can over the next 12 months where he finished this season. Glenn fought hard in his Mclaren 650s GTX but ultimately came up short. Not without some excellent battles all season however. SBT Motorsport
🥉Its great to have the absolutely impressively engineered Tranzam Corvette of Brennan Motorsport back out on track with us, Grant had alot of work ahead of him coming into this season to adapt his Tranzam to doing Standing starts Lorraine and Grant have worked very hard all season and to grab third spot overall in GT1 will be great reward for all their hard work im sure
Congratulations to you all!

GT1 - Race 2 Round 5 Taupo International Motorsport Park
as promised -
Hope you enjoy

Brennan GT1 Corvette VS McLaren & Prototype GT1 Race 2 Rd 5 - Brennan Corvette

Run down on the weekend
Qualifying
Qualified 4th with delaminating tyres and slippery conditions with a very green track. 1.30.5 was my best time so way off the pace
Race 1
Car very difficult to drive with severe understeer with snap oversteer.
But managed a 3rd place. Lap time 1.29.347
Huge overnight changes to try and combat the track conditions
Changed setting on shocks all round - changed front and rear tyres to best 2nd hand ones we had. Camber change on the front and aggressive toe settings and front and rear bar changes.
If this doesnt fix our grip will change the front springs for Race 2 .then did a full spanner check - car all good except for 1 bolt in the watts linkage
Race 2 heres hoping with the changes we can use the extra hp we found
But once again a poor start - the Mclaren and the protype pass me before we got to T1 but by T1 was back on them - passed the protype and right on the back of the McLaren
Now able to stay with the mclaren and was holding out the prototype without having to be defensive. Car not perfect but have confidence in car and can now drive it. Tried to put a pass on mclaren several times but not brave enough and still not enough grip in the rear to come off corners strong.
Was some great close racing Prototype did pass me under brakes in a dear devil move across the ripple strips with a few laps remaining so got 3rd for race 2 and confident the changes were in the tight direction with more to do for R3. Managed Fastest Lap of the race at 1.27.691 - so progress
Race 3
Made more changes to the bars and to the tune so will have more go on the straights to make car more competitive
Slow start from too much wheel spin even though when wheels eventually hook up we have gained all that was lost down into T1
The car has more bottom end
Try several moves on the mclaren and finally get past
Held up a little behind the 4WD subaru but got past him up the short straight and now chasing the crawford and closing up the gap.
Car is not 100% but certainly making more power and cockpit changes to the bars and steering input it starts to become a little better and the gap is now closing - changing my driving lines to obtain better grip and different techniques to get the car to rotate - sometimes using kerbing to help the car rotate
at 5 lap mark a car spins and is parked across the end of back straight before chicanes. Race is red flagged and the race called so 2nd place.
Would have been a good last few laps and was really looking forward to the competition - I got another fastest lap of the race with a 1.27.395 on very old tyres with some having over 4 meetings on them and coming away from the race meeting with no damage to the car
All in all a good end to the season and additional pace found that we can now improve on for next year with some major changes planned. So summing up the gremlins we have experienced throughout this year and last are all gone - car responds positively to small changes, engine certainly has more power throughout the entire rev range. Engine now with 4 seasons under its belt with only 2 changes of valve springs shows we have a superb engine reliability - clutch issues are resolved leaving really only one thing to address as an issue - getting off the line which in the overall scheme of things is going to be pretty easy to fix. So both Lorraine and I think we did close to our best for the year. Will put up some incar footage later today. thanks again to all the followers - old and lots of new. If there is any content you would like us to share leave a comment or if you have anything to offer from your observations, photos, videos, any suggestions to help us improve please add to the coments or send thru via message Cheer Grant and Lorraine

Bit of a wait for qualifying - last one for the morning
Track is damp but not raining at present so can't make a decision on wets or drys till bit closer

Bit of refining work before last round for the season at Taupo this weekend after Hampton Downs so should have better starts

More work done on the elelctric power steer unit with refined GPS speed and pressure maps to get the optimum steering

This track would have to be my most favourite of the North Island tracks.

Being Taupo its likely to be cold and damp but fingers crossed it wont be damp but if so we have the Wets ready.

Been through and performed the spanner check - verified the wheel alignment and checked all the filters. All looking good.

some nice shots of GT1/GT2 cars at the weekend thanks to Gare Photography