# Academic / esoteric question on early Toyota timing belt engines **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** engines\ **Created:** [March 20, 2025, 12:41am UTC](https://community.cartalk.com/t/academic-esoteric-question-on-early-toyota-timing-belt-engines/199545 "2025-03-20T00:41:28Z")\ **Posts on this page:** 8\ **Page:** 3
**Author:** ![bcohen2010](https://avatars.discourse-cdn.com/v4/letter/b/779978/32.png) [@bcohen2010](https://community.cartalk.com/u/bcohen2010)\ **Post date:** [March 23, 2025, 9:58pm UTC](https://community.cartalk.com/t/academic-esoteric-question-on-early-toyota-timing-belt-engines/199545/41 "2025-03-23T21:58:54Z")
I have heard about those mythical 4-cylinder Toyota Sienna vans, but never seen one in person. Do these really exist, or was this just a theoretical option, like the 1997-1999 Toyota Camry with hand-crank windows, which are about as rare as a hen’s tooth. I know Chrysler made a lot of 4-cylinder minivans, and the Caravan/Voyager with the 2.4L engine is definitely on my list of vehicles that I’d love to own. ---
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [March 23, 2025, 10:34pm UTC](https://community.cartalk.com/t/academic-esoteric-question-on-early-toyota-timing-belt-engines/199545/42 "2025-03-23T22:34:56Z")
> [@bcohen2010](#): > > Do these really exist, Yes, shop around. ![image](https://global.discourse-cdn.com/cartalk/original/3X/a/5/a58c579729202c9826e562629aa3476bc7280125.jpeg) ---
**Author:** ![davesmopar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/davesmopar/32/41750_2.png) [@davesmopar](https://community.cartalk.com/u/davesmopar)\ **Post date:** [March 23, 2025, 10:35pm UTC](https://community.cartalk.com/t/academic-esoteric-question-on-early-toyota-timing-belt-engines/199545/43 "2025-03-23T22:35:15Z")
I think you meant to reply to Nevada, but I don’t see anywhere that he said a Sienna ever had a 4 cylinder in it, only that spark plugs are much easier to replace on a 4 cylinder engine… Now the Tacoma’s have always been offered with a 4 cylinder, and the 1st gens with a 2.4 & 2.7L as well as a V6, 2nd and 3rd gens 2.7L 4 cylinders and a V6, but now the 4th gens are only offered with 4 cylinder turbo… point being, with the right gearing a 4 cylinder can still be used for heavy vehicles… I will admit though that putting a Camry engine in a truck was probably not the best thing Toyota ever did, but with my double OD 6 speed automatic, if I knew it wouldn’t affect my warranty, I would re-gear the truck with the 4 cylinder rear gear w/4.30:1 instead of the V6 3.91:1 (3.909:1) for better off idle acceleration… BTW It looks like at least the 2011 & 2012 Sienna’s had a 2.7L option… ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [March 23, 2025, 10:44pm UTC](https://community.cartalk.com/t/academic-esoteric-question-on-early-toyota-timing-belt-engines/199545/44 "2025-03-23T22:44:35Z")
There are 12 2011-2012 2.7 L Siennas for sale on [cars.com](http://cars.com), country-wide. ---
**Author:** ![jtsanders](https://avatars.discourse-cdn.com/v4/letter/j/c2a13f/32.png) [@jtsanders](https://community.cartalk.com/u/jtsanders)\ **Post date:** [March 23, 2025, 11:12pm UTC](https://community.cartalk.com/t/academic-esoteric-question-on-early-toyota-timing-belt-engines/199545/45 "2025-03-23T23:12:23Z")
Dodge used an I-4 engine in the Caravan in the 1G thorough 3G minivans. ---
**Author:** ![JoeMario](https://avatars.discourse-cdn.com/v4/letter/j/3bc359/32.png) [@JoeMario](https://community.cartalk.com/u/JoeMario)\ **Post date:** [March 23, 2025, 11:47pm UTC](https://community.cartalk.com/t/academic-esoteric-question-on-early-toyota-timing-belt-engines/199545/46 "2025-03-23T23:47:07Z")
> ([Academic / esoteric question on early Toyota timing belt engines - #34 by davesmopar](https://community.cartalk.com/t/academic-esoteric-question-on-early-toyota-timing-belt-engines/199545/34)) > > > [@TheWonderful90s](#): > > > > I’m fairly sure that all gasoline Toyota engines that use a timing belt are non interference. The interference engines use a timing chain. > > You might want to do a little more research next time before posting… > > ### 2) Timing Belt Problems > > We’re moving onto yet another issue that really isn’t a true design flaw. However, the timing belt is an important standard maintenance item. **Toyota 3MZ-FE engines are interference engines.** This means there is some overlap in the area in which the pistons and valves travel. This isn’t a problem when the 3.3 V6 ignition timing is on par. > > ![](https://global.discourse-cdn.com/cartalk/original/3X/0/5/05336739e9445597b3efbda5362137b96eb5680f.png) [Tuning Pro - Automotive Performance & Tuning Guides – 2 Jun 21](https://8020automotive.com/toyota-3mz-fe-3-3l-v6-engine/) > > ### [Toyota 3MZ-FE 3.3L V6 Engine - Specs, Reliability, Problems](https://8020automotive.com/toyota-3mz-fe-3-3l-v6-engine/) > > Learn about the Toyota 3MZ-FE 3.3L V6 engine. Toyota 3MZ-FE engine specs, reliability, problems, & performance. > > Pretty sure that is a timing belt… I always understood the above Toyota 3.3L 3MZ-FE engine was interference fit through those years. However, Gates doesn’t think so. If you look at the Gates link earlier in this thread, they state that only the V8 Toyota engines throughout those years were interference. [https://pdf.directindustry.com/pdf/gates/timing-belt-replacement-interval-guide/4801-975291.html](https://pdf.directindustry.com/pdf/gates/timing-belt-replacement-interval-guide/4801-975291.html) ---
**Author:** ![TheWonderful90s](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/thewonderful90s/32/29584_2.png) [@TheWonderful90s](https://community.cartalk.com/u/TheWonderful90s)\ **Post date:** [March 24, 2025, 3:38pm UTC](https://community.cartalk.com/t/academic-esoteric-question-on-early-toyota-timing-belt-engines/199545/47 "2025-03-24T15:38:49Z")
> [@JoeMario](#): > > We’re moving onto yet another issue that really isn’t a true design flaw. This sounds a bit like AI generated content too. ---
**Author:** ![keith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/keith/32/5518_2.png) [@keith](https://community.cartalk.com/u/keith)\ **Post date:** [March 26, 2025, 8:10pm UTC](https://community.cartalk.com/t/academic-esoteric-question-on-early-toyota-timing-belt-engines/199545/48 "2025-03-26T20:10:55Z")
> [@bcohen2010](#): > > I know Chrysler made a lot of 4-cylinder minivans, and the Caravan/Voyager with the 2.4L engine is definitely on my list of vehicles that I’d love to own. They had a tendency to crack around the thermostat housing. The 3.3L V6 was the best engine for the minivan of that era. [Previous page](https://community.cartalk.com/t/academic-esoteric-question-on-early-toyota-timing-belt-engines/199545.md?page=2)