Mazda VVT Install | General Chat | GBS Owners Club
Avatar

Please consider registering
guest

sp_LogInOut Log In sp_Registration Register

Register | Lost password?
Advanced Search

— Forum Scope —




— Match —





— Forum Options —





Minimum search word length is 3 characters - maximum search word length is 84 characters

sp_Feed Topic RSS sp_TopicIcon
Mazda VVT Install
July 31, 2017
7:24 am
Avatar
jgmoz
Member
Members
Forum Posts: 5
Member Since:
June 8, 2017
sp_UserOfflineSmall Offline

Hi am in the research phase for building a Kit car. I see from the posts on here that Nick Milbourn has installed a Mazda VVT engine into his car. Does this fit with the standard bonnet?
Also for the Mazda build is the MX5 donor propshaft used in the kit and what about the Sump, Does this require modification to provide adequate ground clearance?

Thanks in advance

John

July 31, 2017
11:34 am
Avatar
WallerZero
Coventry
Member
Members
Forum Posts: 85
Member Since:
May 11, 2015
sp_UserOfflineSmall Offline

I believe the GBS Factory can now accommodate this by moving some chassis rails for you at build. But if not, the answer is still yes, you just need to do it yourself lol. I'm not sure on the bonnet though, I know the Mk1 intake/throttle body was close but believe the VVT intake to have a more curved over design so should be ok (if someone can confirm?)

Yep, propshaft is also reused, albeit shortened (along with the driveshafts) done by GBS unless you're feeling brave to measure yourself and use a local place - cheaper, possibly quicker, they do exist but everything is on you to get the measurements right.

Sump, I used the original and never had an issue. Yes it was possibly the lowest point on the car but still had 100mm clearance. Just be aware of it on speed bumps and you'll be fine 😉

Mazda Zero 2.5L KLDE V6
Registered: March 2014.
Build Blog: http://zachsgbszero.blogspot.co.uk/

July 31, 2017
1:44 pm
Avatar
Simon
GBS Technical
Admin
Forum Posts: 2139
Member Since:
August 9, 2013
sp_UserOfflineSmall Offline

The VVT unit is very close to the bonnet, from memory, which is fading fast at my age, I took Nicks car for IVA, and pretty sure he had a scoop fitted to allow the mechanism more room.

The engine will go down a little which may help, but the chassis rail problem becomes more of a problem. as Zack mentions. As he says there is a factory mod, to allow the Mk2 onward manifold, to a point.

The factory only built the Mk1 kit, so mods were done as and when customers picked up issues. It is not a problem if you fit throttles.

I have seen a chassis with the support rails removed, but extra support for the top rails have been added.

You can go the DIY route for the prop, but make sure they can dynamically balance when it is done. Again the simpler option, and to be honest, the safer option, after having seen one fail on a RR, is to get an exchange from GBS

would agree with sump

July 31, 2017
6:07 pm
Avatar
RobertH
N.Ireland
Member
Members
Forum Posts: 84
Member Since:
January 31, 2015
sp_UserOfflineSmall Offline

I used the vvt engine and put a couple of bulges/ blisters in the bonnet to accommodate the vvt gear and the plug at the rear of the engine. Will put up a photo later.
Rab

July 31, 2017
6:45 pm
Avatar
jgmoz
Member
Members
Forum Posts: 5
Member Since:
June 8, 2017
sp_UserOfflineSmall Offline

Thanks for the feedback. Very much appreciated.
Look forward to the photos Ran.

On a totally different topic. Are there any zero owners/ builders near or around Huddersfield?

July 31, 2017
10:43 pm
Avatar
RobertH
N.Ireland
Member
Members
Forum Posts: 84
Member Since:
January 31, 2015
sp_UserOfflineSmall Offline

http://i66.tinypic.com/30ji3xy.jpgImage Enlarger

Hope those work
Rab

August 1, 2017
9:31 am
Avatar
jgmoz
Member
Members
Forum Posts: 5
Member Since:
June 8, 2017
sp_UserOfflineSmall Offline

Rab

Thanks for the pic. Very useful.

Ps. Car looks great

August 7, 2017
11:03 am
Avatar
NickMilbourn
Hampshire
Member
Members
Forum Posts: 299
Member Since:
October 27, 2014
sp_UserOfflineSmall Offline

Hi John, sorry for slow reply bu have been on my summer hols!

You've got the answers already but can share with you what I did. For me the bonnet was catching solely on the VVT actuator at the front of the engine, the camshaft position sensor on the rear of the engine was no problem for me. I made a cut out in the bonnet for the VVT actuator:

http://i240.photobucket.com/albums/ff142/nickynibbles/Shared/GBS%20Zero%20build/2016-04/DSC_0447.jpgImage Enlarger

I then also had a bonnet hump made by a classic car restorer rolled from aluminium to match the bonnet profile, which was then riveted & bonded in place. It was advised that gauge of the bonnet aluminium is too thin to rework or weld. This was expensive though so most others go for a plastic scoop/bulge of some sort. I then had the car painted and got creative with some matt black vinyl, so this is the finished article:

http://i240.photobucket.com/albums/ff142/nickynibbles/Shared/GBS%20Zero%20build/2017-04/DSC_0065.jpgImage Enlarger
http://i240.photobucket.com/albums/ff142/nickynibbles/Shared/GBS%20Zero%20build/2017-06/DSC_0133.jpgImage Enlarger

1.8 VVT Mazda GT Zero - ATR throttle bodies & 171bhp!!
IVA passed Friday 21st October 2016!!
Registered April 2017

Forum Timezone: Europe/London

Most Users Ever Online: 96

Currently Online: Woofrs
8 Guest(s)

Currently Browsing this Page:
1 Guest(s)

Members Birthdays
sp_BirthdayIcon
Today None
Upcoming None

Top Posters:

nelmo: 560

Mitch: 367

TOPCATNO6: 336

NickMilbourn: 299

RichardL: 206

Graterham: 202

Foxtrottransit: 196

Marlin: 173

michaelhopps: 172

2ofus: 169

Member Stats:

Guest Posters: 2

Members: 4865

Moderators: 0

Admins: 4

Forum Stats:

Groups: 2

Forums: 17

Topics: 1390

Posts: 8423

Newest Members:

sophiavy1, JamesTox, marshallyu16, vondatq16, mariettaaf1, Craigdeeby, Taksi154r, bertinRoTus, kubityha, Wright CNC

Administrators: dijitul: 2, MidsZero: 314, Simon: 2139, Ruth Hall: 10