Jenvey Questions - Engines Forum - Peugeot 306 GTi-6 & Rallye Owners Club

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Subject: Jenvey Questions

Stuwee

Senior User

Location: st albans

Registered: 27 Jun 2007

Posts: 739

Status: Offline

Post #1

Just have a few questions regarding swapping Jenvey bodies from an s16 (RFT) to a gti6 (RFS) engine.

1.Is the inlet body itself interchangeable between the two cylinder heads??

2.What sort of power gains are there to be had with jenvey's on a standard/fast road cam'd 6 engine??

3.The s16 is running an EFI ECU and i was wondering weather the ECU on a Gti6 (RFS) engine can be altered to run Jenvey bodies??

Just gathering idea's together at the moment on what to do.

Stuart

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Ph1 Cossack 6

Posted 5th Jul 2011 at 02:47

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cjm_harris

Seasoned Pro

Location: Parts for Sale section

Registered: 04 Dec 2007

Posts: 7,442

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Post #2

stuwee1983 wrote:

1.Is the inlet body itself interchangeable between the two cylinder heads??

When I bought my throttle bodies from Jenvey the manifold was listed as an Mi16, so if it fits that and a gti6 head, would guess it would fit yours.

stuwee1983 wrote:

2.What sort of power gains are there to be had with jenvey's on a standard/fast road cam'd 6 engine??

With some half decent cams and jenveys you should see around 200-210 bhp.

stuwee1983 wrote:

3.The s16 is running an EFI ECU and i was wondering weather the ECU on a Gti6 (RFS) engine can be altered to run Jenvey bodies??

The standard ECU can be remapped by the likes of Wayne, but why not use the EFI ECU?

________________________________________

Chris
1999 China Gti6 Supercharged Devil

[Fun car] >>Project Thread<<
2000 Bianca 306 Diesel [Work runabout]

Posted 5th Jul 2011 at 03:20

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daveyboy

aka Jim Davey

Location: Southampton

Registered: 01 Oct 2007

Posts: 8,648

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Post #3

I have a brand new Jenvey maniofold in a box, yours for �100 delivered.

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Posted 5th Jul 2011 at 19:58

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pugjim

Seasoned Pro

Location: Sheffield

Registered: 11 Mar 2007

Posts: 1,380

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Post #4

jenvey Inlet manifold is the same for the s16/mi16 and gti6.

I would use the EFI ecu from the s16 as it will already have a good base map for the gti6 engine to get it up and running then have it mapped properly after.

Posted 5th Jul 2011 at 23:36

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Stuwee

Senior User

Location: st albans

Registered: 27 Jun 2007

Posts: 739

Status: Offline

Post #5

Thanks for the info.

The s16 engine currently is putting out 185 to 195 Bhp(preivous owners quotes). She does not feel she has got that at the moment Sad

.
Hesitation and over fueling are the main issues.

If you are only able to squeeze around 200-210 Bhp out of a cammed RFS engine then i might just stick with the s16 lump until my pockets gets deep enough to go down the major engine internals mods/Sc route.

Rolling road and re map here i come Ninja

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Ph1 Cossack 6

Posted 6th Jul 2011 at 05:17

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Stuwee

Senior User

Location: st albans

Registered: 27 Jun 2007

Posts: 739

Status: Offline

Post #6

More questions.....

I have 45mm jenvey's with 48 length trumpets running euro 1 efi ecu and i presume original bosh injectors off the avac set up on the S16.

Basically i now want to put these bodies on a standard RFS lump, i do not have a massive budget and cannot afford another �1000 on pistons and cams.

Any ideas on the power gains on a standard RFS engine Unsure

I also presume i would need to upgrade the injectors so any recommendations??

If there is anything i have missed which i need to do to make this transplant a success please let me know.

Thanks

________________________________________

Ph1 Cossack 6

Posted 1st Aug 2011 at 03:07

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will130787

Seasoned Pro

Location: Reading

Registered: 24 Sep 2009

Posts: 3,933

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Post #7

I don't think there is a huge amount of gains on a standard rfs engine bud, bit the noise Smile

Still undecided what to do as mentioned at pugfest?! I would get the s16 mapped properly Wink

________________________________________

Ex Astor 6 owner Sad

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Now driving Mk5 Golf GTTdi, mile muncher

But still live for the 306 Ninja

Posted 1st Aug 2011 at 03:17

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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,838

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Post #8

get it mapped properly and a decent exhaust inc manifold if it hasn't already, they do perform quite close to the rfs when built up properly (most maxi's ran RFY based engines)

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Posted 1st Aug 2011 at 03:32

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Stuwee

Senior User

Location: st albans

Registered: 27 Jun 2007

Posts: 739

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Post #9

Yes it has got a 4 branch manifold,piper 272 fast road cams and the 6 gearbox to boot.

I have been told she is running 185+ but she has shown not be any faster than a 6 LOL

My main thought was instead of faffing about with re maps and other issues that i have found is to start fresh with a standard RFS lump but if the power gains are only improve BHP to circa 180 then it is not worth the hassle of the swappage.

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Ph1 Cossack 6

Posted 1st Aug 2011 at 04:35

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